[{"id":"validation_0","media":["validation_0_0.mp4"],"messages":[{"role":"user","question":"Which cinematic shooting technique is shown in the video?","answer":"Dolly Zoom","hint":"","options":{},"choices":[],"video_id":"Art_0","question_type":"open-ended","subject":"Art","prompt":"<video>Which cinematic shooting technique is shown in the video?"}]},{"id":"validation_1","media":["validation_1_0.mp4"],"messages":[{"role":"user","question":"Assume that 2.24 liters of gas fully participates in the reaction shown in the video under the standard temperature and pressure condition, how many grams of precipitate are produced approximately?","answer":"A","hint":"","options":{"A":"10.0","B":"5.0","C":"12.0","D":"15.0","E":"20.0"},"choices":[],"video_id":"Chemistry_0","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Assume that 2.24 liters of gas fully participates in the reaction shown in the video under the standard temperature and pressure condition, how many grams of precipitate are produced approximately?\nA. 10.0\nB. 5.0\nC. 12.0\nD. 15.0\nE. 20.0\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_10","media":["validation_10_0.mp4"],"messages":[{"role":"user","question":"The type of loading shown in the video is considered a **_______** load.","answer":"rectangular","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_0","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>The type of loading shown in the video is considered a **_______** load."}]},{"id":"validation_100","media":["validation_100_0.mp4"],"messages":[{"role":"user","question":"How does the energy in the circuit in the video change?","answer":"B","hint":"","options":{"A":"The electrical energy of the capacitor is converted into light energy of the bulb.","B":"The electrical energy stored in the battery is converted into electrical energy in the capacitor and light energy and heat loss in the bulb.","C":"The electrical energy of the capacitor is converted into electrical energy of the battery.","D":"The electrical energy stored in the battery is converted into electrical energy and heat loss in the capacitor.","E":"The electrical energy of the capacitor is converted into electrical energy and heat loss of the battery."},"choices":[],"video_id":"Electromagnetism_10","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>How does the energy in the circuit in the video change?\nA. The electrical energy of the capacitor is converted into light energy of the bulb.\nB. The electrical energy stored in the battery is converted into electrical energy in the capacitor and light energy and heat loss in the bulb.\nC. The electrical energy of the capacitor is converted into electrical energy of the battery.\nD. The electrical energy stored in the battery is converted into electrical energy and heat loss in the capacitor.\nE. The electrical energy of the capacitor is converted into electrical energy and heat loss of the battery.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_101","media":["validation_101_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the type of the circuit?","answer":"B","hint":"","options":{"A":"pure resistor circuit","B":"RC circuit","C":"RL circuit","D":"LC circuit","E":"RLC circuit"},"choices":[],"video_id":"Electromagnetism_10","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the type of the circuit?\nA. pure resistor circuit\nB. RC circuit\nC. RL circuit\nD. LC circuit\nE. RLC circuit\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_102","media":["validation_102_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the effect of increasing resistance in the circuit on the voltmeter readings over time?","answer":"D","hint":"","options":{"A":"The increased resistance causes the capacitor to charge faster, so the voltmeter reading increases more rapidly.","B":"The increased resistance causes the capacitor to charge more slowly initially, but the final voltage reached is higher.","C":"The increased resistance has no effect on the charging process or the voltmeter readings since the battery voltage is constant.","D":"The increased resistance causes the capacitor to charge more slowly, so the voltmeter reading increases more slowly.","E":"The increased resistance causes the capacitor to discharge, causing the voltmeter reading to decrease over time."},"choices":[],"video_id":"Electromagnetism_10","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the effect of increasing resistance in the circuit on the voltmeter readings over time?\nA. The increased resistance causes the capacitor to charge faster, so the voltmeter reading increases more rapidly.\nB. The increased resistance causes the capacitor to charge more slowly initially, but the final voltage reached is higher.\nC. The increased resistance has no effect on the charging process or the voltmeter readings since the battery voltage is constant.\nD. The increased resistance causes the capacitor to charge more slowly, so the voltmeter reading increases more slowly.\nE. The increased resistance causes the capacitor to discharge, causing the voltmeter reading to decrease over time.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_103","media":["validation_103_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements best explains why the voltmeter reading rises steadily?","answer":"A","hint":"","options":{"A":"The aluminum cylinder acts as a capacitor that charges over time when the switch is closed, causing the voltmeter reading.","B":"The aluminum cylinder acts as an inductor, inducing a rising voltage due to the increasing current when the switch is closed.","C":"The light bulb's resistance decreases as it heats up, allowing more current to flow and increasing the voltage reading over time.","D":"The voltmeter reads an increasing voltage due to a time-dependent magnetic field created by the circuit when the switch is closed.","E":"The fluctuation in the voltmeter reading is caused by the exponential decay of voltage across a discharging capacitor when the switch is closed."},"choices":[],"video_id":"Electromagnetism_10","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statements best explains why the voltmeter reading rises steadily?\nA. The aluminum cylinder acts as a capacitor that charges over time when the switch is closed, causing the voltmeter reading.\nB. The aluminum cylinder acts as an inductor, inducing a rising voltage due to the increasing current when the switch is closed.\nC. The light bulb's resistance decreases as it heats up, allowing more current to flow and increasing the voltage reading over time.\nD. The voltmeter reads an increasing voltage due to a time-dependent magnetic field created by the circuit when the switch is closed.\nE. The fluctuation in the voltmeter reading is caused by the exponential decay of voltage across a discharging capacitor when the switch is closed.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_104","media":["validation_104_0.mp4"],"messages":[{"role":"user","question":"In disease shown in the video, core body temperature rises above ______ degrees Celsius, leading to life-threatening conditions. Based on the video description, the victim is likely experiencing this condition.","answer":"41","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_3","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In disease shown in the video, core body temperature rises above ______ degrees Celsius, leading to life-threatening conditions. Based on the video description, the victim is likely experiencing this condition."}]},{"id":"validation_105","media":["validation_105_0.mp4"],"messages":[{"role":"user","question":"In the scenario depicted in the video where Santa gives small gifts to people without receiving anything in return, the transaction lacks **_____**, an essential element in contract formation.","answer":"Consideration","hint":"","options":{},"choices":[],"video_id":"Law_2","question_type":"open-ended","subject":"Law","prompt":"<video>In the scenario depicted in the video where Santa gives small gifts to people without receiving anything in return, the transaction lacks **_____**, an essential element in contract formation."}]},{"id":"validation_106","media":["validation_106_0.mp4"],"messages":[{"role":"user","question":"If the scenario shown in the video is treated as a transactional scenario, the parties cannot be considered to have reached an agreement, because what condition is missing?","answer":"E","hint":"","options":{"A":"Legality","B":"Acceptance","C":"Offer","D":"Contractual Capacity","E":"Consideration"},"choices":[],"video_id":"Law_2","question_type":"multiple-choice","subject":"Law","prompt":"<video>If the scenario shown in the video is treated as a transactional scenario, the parties cannot be considered to have reached an agreement, because what condition is missing?\nA. Legality\nB. Acceptance\nC. Offer\nD. Contractual Capacity\nE. Consideration\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_107","media":["validation_107_0.mp4"],"messages":[{"role":"user","question":"What is the setting of the video?","answer":"B","hint":"","options":{"A":"lakeside","B":"seaside","C":"country","D":"city","E":"forest"},"choices":[],"video_id":"Literature_1","question_type":"multiple-choice","subject":"Literature","prompt":"<video>What is the setting of the video?\nA. lakeside\nB. seaside\nC. country\nD. city\nE. forest\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_108","media":["validation_108_0.mp4"],"messages":[{"role":"user","question":"Based on the description of the video, which of the following poems does the setting most closely resemble?","answer":"D","hint":"","options":{"A":"*\"Sonnet 18\"* by William Shakespeare","B":"*\"Ozymandias\"* by Percy Bysshe Shelley","C":"*\"The Waste Land\"* by T.S. Eliot","D":"*\"Dover Beach\"* by Matthew Arnold","E":"*\"The Road Not Taken\"* by Robert Frost"},"choices":[],"video_id":"Literature_1","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the description of the video, which of the following poems does the setting most closely resemble?\nA. *\"Sonnet 18\"* by William Shakespeare\nB. *\"Ozymandias\"* by Percy Bysshe Shelley\nC. *\"The Waste Land\"* by T.S. Eliot\nD. *\"Dover Beach\"* by Matthew Arnold\nE. *\"The Road Not Taken\"* by Robert Frost\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_109","media":["validation_109_0.mp4"],"messages":[{"role":"user","question":"In the experiment described, the bright band in the fluorescent illustrates _________ Law.","answer":"Faraday's","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_11","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the experiment described, the bright band in the fluorescent illustrates _________ Law."}]},{"id":"validation_11","media":["validation_11_0.mp4"],"messages":[{"role":"user","question":"The indicator on the _______ rod melts first.","answer":"aluminum","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_0","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The indicator on the _______ rod melts first."}]},{"id":"validation_110","media":["validation_110_0.mp4"],"messages":[{"role":"user","question":"What kind of energy changes appear in the video?","answer":"B","hint":"","options":{"A":"The heat energy is converted into light energy of the lamp.","B":"The electrical energy is converted into light energy of the lamp.","C":"The light energy of the lamp is converted into kinetic energy.","D":"The light energy of the lamp is converted into heat energy.","E":"The light energy of the lamp is converted into electrical energy."},"choices":[],"video_id":"Electromagnetism_11","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>What kind of energy changes appear in the video?\nA. The heat energy is converted into light energy of the lamp.\nB. The electrical energy is converted into light energy of the lamp.\nC. The light energy of the lamp is converted into kinetic energy.\nD. The light energy of the lamp is converted into heat energy.\nE. The light energy of the lamp is converted into electrical energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_111","media":["validation_111_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the phenomenon observed in the video?","answer":"D","hint":"","options":{"A":"The heat from the lava lamp causes thermal excitation of the gas in the fluorescent bulb, leading to light emission.","B":"Visible light from the lava lamp induces fluorescence in the bulb's phosphor coating, causing it to emit light.","C":"Infrared radiation from the lava lamp heats the mercury vapor in the bulb, causing it to emit ultraviolet light.","D":"Electric fields from the alternating current in the lava lamp induce ionization of gas within the fluorescent bulb, resulting in light emission.","E":"Chemical vapors from the lava lamp enter the bulb and react with the gas inside to produce light."},"choices":[],"video_id":"Electromagnetism_11","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the phenomenon observed in the video?\nA. The heat from the lava lamp causes thermal excitation of the gas in the fluorescent bulb, leading to light emission.\nB. Visible light from the lava lamp induces fluorescence in the bulb's phosphor coating, causing it to emit light.\nC. Infrared radiation from the lava lamp heats the mercury vapor in the bulb, causing it to emit ultraviolet light.\nD. Electric fields from the alternating current in the lava lamp induce ionization of gas within the fluorescent bulb, resulting in light emission.\nE. Chemical vapors from the lava lamp enter the bulb and react with the gas inside to produce light.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_112","media":["validation_112_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the underlying phenomenon causing the observed effect?","answer":"E","hint":"","options":{"A":"The lava lamp emits infrared radiation that is absorbed by the fluorescent bulb's gas, causing direct excitation and then light emission.","B":"The heat from the lava lamp raises the temperature of the fluorescent bulb, causing thermal ionization of the gas inside.","C":"Electromagnetic waves from the lava lamp's AC supply cause the fluorescent bulb's phosphor coating to fluoresce, emitting light.","D":"Ultraviolet light from the lava lamp excites the phosphor coating of the fluorescent bulb, causing it to emit light.","E":"Time-varying magnetic fields in the lava lamp induce an electric field in the bulb, resulting in ionization of the gas and then light emission."},"choices":[],"video_id":"Electromagnetism_11","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the underlying phenomenon causing the observed effect?\nA. The lava lamp emits infrared radiation that is absorbed by the fluorescent bulb's gas, causing direct excitation and then light emission.\nB. The heat from the lava lamp raises the temperature of the fluorescent bulb, causing thermal ionization of the gas inside.\nC. Electromagnetic waves from the lava lamp's AC supply cause the fluorescent bulb's phosphor coating to fluoresce, emitting light.\nD. Ultraviolet light from the lava lamp excites the phosphor coating of the fluorescent bulb, causing it to emit light.\nE. Time-varying magnetic fields in the lava lamp induce an electric field in the bulb, resulting in ionization of the gas and then light emission.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_113","media":["validation_113_0.mp4"],"messages":[{"role":"user","question":"The algorithm being illustrated is ______.","answer":"Breadth-First Search","hint":"","options":{},"choices":[],"video_id":"Computer_Science_4","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm being illustrated is ______."}]},{"id":"validation_114","media":["validation_114_0.mp4"],"messages":[{"role":"user","question":"What kind of algorithm is used in the video?","answer":"A","hint":"","options":{"A":"breadth first search","B":"sequential search","C":"post-order traversal","D":"heuristic search","E":"hash search"},"choices":[],"video_id":"Computer_Science_4","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of algorithm is used in the video?\nA. breadth first search\nB. sequential search\nC. post-order traversal\nD. heuristic search\nE. hash search\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_115","media":["validation_115_0.mp4"],"messages":[{"role":"user","question":"Which traversal algorithm is being demonstrated in the video, and what characteristic of this traversal order does it highlight?","answer":"A","hint":"","options":{"A":"Level-order traversal (Breadth-first traversal); nodes are visited level by level from top to bottom.","B":"Pre-order traversal; nodes are visited in root-left-right order.","C":"In-order traversal; nodes are visited in left-root-right order, resulting in sorted order.","D":"Post-order traversal; nodes are visited in left-right-root order.","E":"Reverse level-order traversal; nodes are visited level by level from bottom to top."},"choices":[],"video_id":"Computer_Science_4","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which traversal algorithm is being demonstrated in the video, and what characteristic of this traversal order does it highlight?\nA. Level-order traversal (Breadth-first traversal); nodes are visited level by level from top to bottom.\nB. Pre-order traversal; nodes are visited in root-left-right order.\nC. In-order traversal; nodes are visited in left-root-right order, resulting in sorted order.\nD. Post-order traversal; nodes are visited in left-right-root order.\nE. Reverse level-order traversal; nodes are visited level by level from bottom to top.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_116","media":["validation_116_0.mp4"],"messages":[{"role":"user","question":"In image processing demonstrated in the video, breadth-first search can be used to perform ______ algorithm.","answer":"Connected Component Labeling","hint":"","options":{},"choices":[],"video_id":"Computer_Science_5","question_type":"open-ended","subject":"Computer Science","prompt":"<video>In image processing demonstrated in the video, breadth-first search can be used to perform ______ algorithm."}]},{"id":"validation_117","media":["validation_117_0.mp4"],"messages":[{"role":"user","question":"Employers may have limited liability for employees' actions during a **______**, as illustrated by the scenario mentioned in the video.","answer":"general strike","hint":"","options":{},"choices":[],"video_id":"Law_3","question_type":"open-ended","subject":"Law","prompt":"<video>Employers may have limited liability for employees' actions during a **______**, as illustrated by the scenario mentioned in the video."}]},{"id":"validation_118","media":["validation_118_0.mp4"],"messages":[{"role":"user","question":"If the situation in the video causes one party's obligations not to be performed as agreed in the contract, does the party need to bear the responsibility?","answer":"E","hint":"","options":{"A":"They must bear the responsibility in any circumstances.","B":"Only in situations of economic hardship","C":"Only if both parties agree","D":"They can transfer their obligations to another party","E":"No"},"choices":[],"video_id":"Law_3","question_type":"multiple-choice","subject":"Law","prompt":"<video>If the situation in the video causes one party's obligations not to be performed as agreed in the contract, does the party need to bear the responsibility?\nA. They must bear the responsibility in any circumstances.\nB. Only in situations of economic hardship\nC. Only if both parties agree\nD. They can transfer their obligations to another party\nE. No\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_119","media":["validation_119_0.mp4"],"messages":[{"role":"user","question":"Based on the events depicted in the video, which of the following legal acts grants the ability to request federal injunctions against specific activities shown?","answer":"C","hint":"","options":{"A":"The Wagner Act of 1935.","B":"The Norris-LaGuardia Act of 1932.","C":"The Taft-Hartley Act of 1947.","D":"The Fair Labor Standards Act of 1938.","E":"The Clayton Antitrust Act of 1914."},"choices":[],"video_id":"Law_3","question_type":"multiple-choice","subject":"Law","prompt":"<video>Based on the events depicted in the video, which of the following legal acts grants the ability to request federal injunctions against specific activities shown?\nA. The Wagner Act of 1935.\nB. The Norris-LaGuardia Act of 1932.\nC. The Taft-Hartley Act of 1947.\nD. The Fair Labor Standards Act of 1938.\nE. The Clayton Antitrust Act of 1914.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_12","media":["validation_12_0.mp4"],"messages":[{"role":"user","question":"According to the video, which of the following statements can be inferred?","answer":"B","hint":"","options":{"A":"Ni has a lower specific heat than Brass","B":"Al has a lower specific heat than Brass","C":"Al has a higher specific heat than Stainless steel","D":"Cu has a lower specific heat than Brass","E":"Stainless steel has a lower specific heat than Cu"},"choices":[],"video_id":"Mechanical_Engineering_0","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>According to the video, which of the following statements can be inferred?\nA. Ni has a lower specific heat than Brass\nB. Al has a lower specific heat than Brass\nC. Al has a higher specific heat than Stainless steel\nD. Cu has a lower specific heat than Brass\nE. Stainless steel has a lower specific heat than Cu\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_120","media":["validation_120_0.mp4"],"messages":[{"role":"user","question":"Which of the following legal avenues allows the employer to seek such an injunction in federal court against the activity shown in the video, and under what conditions is such an injunction permissible under U.S. federal labor law, given historical precedent?","answer":"E","hint":"","options":{"A":"Under the Norris-LaGuardia Act of 1932, federal courts are prohibited from issuing injunctions in cases involving labor disputes, so the employer cannot seek an injunction.","B":"Under the Wagner Act (National Labor Relations Act) of 1935, the employer can file an unfair labor practice charge with the National Labor Relations Board to enjoin the strike.","C":"Under the Taft-Hartley Act of 1947, the President can seek an 80-day cooling-off injunction to halt the strike if it imperils national health or safety.","D":"Under the Clayton Antitrust Act of 1914, the employer can seek an injunction because the strike constitutes an illegal restraint of trade.","E":"Under the Taft-Hartley Act of 1947, the employer can sue the union in federal court for breach of the collective bargaining agreement, and a court can issue an injunction if the strike violates a binding arbitration clause."},"choices":[],"video_id":"Law_3","question_type":"multiple-choice","subject":"Law","prompt":"<video>Which of the following legal avenues allows the employer to seek such an injunction in federal court against the activity shown in the video, and under what conditions is such an injunction permissible under U.S. federal labor law, given historical precedent?\nA. Under the Norris-LaGuardia Act of 1932, federal courts are prohibited from issuing injunctions in cases involving labor disputes, so the employer cannot seek an injunction.\nB. Under the Wagner Act (National Labor Relations Act) of 1935, the employer can file an unfair labor practice charge with the National Labor Relations Board to enjoin the strike.\nC. Under the Taft-Hartley Act of 1947, the President can seek an 80-day cooling-off injunction to halt the strike if it imperils national health or safety.\nD. Under the Clayton Antitrust Act of 1914, the employer can seek an injunction because the strike constitutes an illegal restraint of trade.\nE. Under the Taft-Hartley Act of 1947, the employer can sue the union in federal court for breach of the collective bargaining agreement, and a court can issue an injunction if the strike violates a binding arbitration clause.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_121","media":["validation_121_0.mp4"],"messages":[{"role":"user","question":"In the symbiotic relationship shown in the video,  the type of symbiosis is known as **______________**.","answer":"Mutualism","hint":"","options":{},"choices":[],"video_id":"Biology_2","question_type":"open-ended","subject":"Biology","prompt":"<video>In the symbiotic relationship shown in the video,  the type of symbiosis is known as **______________**."}]},{"id":"validation_122","media":["validation_122_0.mp4"],"messages":[{"role":"user","question":"In the video, this demonstrates the effect of the _______ force.","answer":"Lorentz","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_12","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the video, this demonstrates the effect of the _______ force."}]},{"id":"validation_123","media":["validation_123_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the filament's movement?","answer":"D","hint":"","options":{"A":"The changing magnetic field induces an electromotive force in the filament, increasing the current and causing mechanical motion.","B":"The filament is made of a ferromagnetic material and is attracted to the magnet due to magnetic attraction.","C":"The magnetic field from the magnet induces eddy currents in the filament, leading to heating and deformation.","D":"The moving charges in the filament experience a Lorentz force due to the external magnetic field, causing the filament to move.","E":"The electrons in the filament are accelerated by an external electric field, and as they interact with the magnetic field, they experience a force that causes the filament to move."},"choices":[],"video_id":"Electromagnetism_12","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the filament's movement?\nA. The changing magnetic field induces an electromotive force in the filament, increasing the current and causing mechanical motion.\nB. The filament is made of a ferromagnetic material and is attracted to the magnet due to magnetic attraction.\nC. The magnetic field from the magnet induces eddy currents in the filament, leading to heating and deformation.\nD. The moving charges in the filament experience a Lorentz force due to the external magnetic field, causing the filament to move.\nE. The electrons in the filament are accelerated by an external electric field, and as they interact with the magnetic field, they experience a force that causes the filament to move.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_124","media":["validation_124_0.mp4"],"messages":[{"role":"user","question":"In the video, the construction crew is working on a mountainside. Based on the footage shown, this method is referred to as ______.","answer":"blasting","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_1","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the video, the construction crew is working on a mountainside. Based on the footage shown, this method is referred to as ______."}]},{"id":"validation_125","media":["validation_125_0.mp4"],"messages":[{"role":"user","question":"Which excavation method is shown in the video?","answer":"D","hint":"","options":{"A":"ripping","B":"digging","C":"hydraulic hammering","D":"blasting","E":"drilling"},"choices":[],"video_id":"Civil_Engineering_1","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which excavation method is shown in the video?\nA. ripping\nB. digging\nC. hydraulic hammering\nD. blasting\nE. drilling\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_126","media":["validation_126_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which rockfall mitigation technique is being used to address the unstable slope and protect the roadway below?","answer":"B","hint":"","options":{"A":"Installation of rock bolts and wire mesh reinforcement","B":"Controlled blasting to remove loose and unstable rock","C":"Construction of a reinforced concrete retaining wall at the base of the slope","D":"Application of shotcrete (sprayed concrete) to stabilize the rock face","E":"Bioengineering methods such as planting vegetation to hold the soil"},"choices":[],"video_id":"Civil_Engineering_1","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the video description, which rockfall mitigation technique is being used to address the unstable slope and protect the roadway below?\nA. Installation of rock bolts and wire mesh reinforcement\nB. Controlled blasting to remove loose and unstable rock\nC. Construction of a reinforced concrete retaining wall at the base of the slope\nD. Application of shotcrete (sprayed concrete) to stabilize the rock face\nE. Bioengineering methods such as planting vegetation to hold the soil\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_127","media":["validation_127_0.mp4"],"messages":[{"role":"user","question":"In the video, the movement of molecules across the membrane represents the process of ions passing through a channel. Tetrodotoxin specifically binds to the _____(color) protein.","answer":"blue","hint":"","options":{},"choices":[],"video_id":"Neurobiology_5","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, the movement of molecules across the membrane represents the process of ions passing through a channel. Tetrodotoxin specifically binds to the _____(color) protein."}]},{"id":"validation_128","media":["validation_128_0.mp4"],"messages":[{"role":"user","question":"Considering this video shows an action potential of a neuron, If tetrodotoxin is applied to the neuron in this video, what will happen to the blue ion?","answer":"B","hint":"","options":{"A":"Not affected","B":"Stop flow","C":"Flow slower","D":"Flow faster","E":"Flow to the opposite direction"},"choices":[],"video_id":"Neurobiology_5","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Considering this video shows an action potential of a neuron, If tetrodotoxin is applied to the neuron in this video, what will happen to the blue ion?\nA. Not affected\nB. Stop flow\nC. Flow slower\nD. Flow faster\nE. Flow to the opposite direction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_129","media":["validation_129_0.mp4"],"messages":[{"role":"user","question":"In the context of the video showing ions moving across the neuronal membrane during an action potential, suppose a researcher applies a drug specifically inhibiting the function of the yellow channel depicted in the video. Which of the following effects is most likely to be observed as a result of this inhibition?","answer":"D","hint":"","options":{"A":"The initiation of the action potential would be prevented due to lack of depolarization.","B":"The neuron would hyperpolarize immediately after the action potential.","C":"The frequency of action potentials generated would increase due to faster repolarization.","D":"Repolarization of the neuron after the action potential would be prolonged, leading to a longer action potential duration.","E":"Sodium ions would be unable to influx, preventing the rising phase of the action potential."},"choices":[],"video_id":"Neurobiology_5","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>In the context of the video showing ions moving across the neuronal membrane during an action potential, suppose a researcher applies a drug specifically inhibiting the function of the yellow channel depicted in the video. Which of the following effects is most likely to be observed as a result of this inhibition?\nA. The initiation of the action potential would be prevented due to lack of depolarization.\nB. The neuron would hyperpolarize immediately after the action potential.\nC. The frequency of action potentials generated would increase due to faster repolarization.\nD. Repolarization of the neuron after the action potential would be prolonged, leading to a longer action potential duration.\nE. Sodium ions would be unable to influx, preventing the rising phase of the action potential.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_13","media":["validation_13_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most accurate explanation for why the indicator on the aluminum rod melted first?","answer":"B","hint":"","options":{"A":"Aluminum has a higher thermal conductivity than copper, allowing heat to travel faster along the rod.","B":"Aluminum has a lower heat capacity per unit volume than copper, so it heats up faster despite having a lower thermal conductivity.","C":"The melting point of aluminum is lower than that of copper, causing the indicator to melt sooner.","D":"Aluminum rods have a larger cross-sectional area, reducing thermal resistance.","E":"The experiment demonstrates experimental error; copper should have heated up faster in theory."},"choices":[],"video_id":"Mechanical_Engineering_0","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following is the most accurate explanation for why the indicator on the aluminum rod melted first?\nA. Aluminum has a higher thermal conductivity than copper, allowing heat to travel faster along the rod.\nB. Aluminum has a lower heat capacity per unit volume than copper, so it heats up faster despite having a lower thermal conductivity.\nC. The melting point of aluminum is lower than that of copper, causing the indicator to melt sooner.\nD. Aluminum rods have a larger cross-sectional area, reducing thermal resistance.\nE. The experiment demonstrates experimental error; copper should have heated up faster in theory.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_130","media":["validation_130_0.mp4"],"messages":[{"role":"user","question":"Based on the video depicting ion movement across a neuronal membrane during an action potential, suppose a genetic mutation causes blue channels in a neuron to inactivate more slowly than normal. Which of the following effects would most likely occur in the neuron's action potential as a result of this mutation?","answer":"C","hint":"","options":{"A":"The resting membrane potential would become more negative due to increased sodium permeability.","B":"The amplitude of the action potential peak would decrease due to reduced sodium influx.","C":"The repolarization phase of the action potential would be delayed, resulting in prolonged depolarization.","D":"The threshold for action potential initiation would be higher, making it harder to generate action potentials.","E":"The after-hyperpolarization phase would be more pronounced due to enhanced potassium efflux."},"choices":[],"video_id":"Neurobiology_5","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Based on the video depicting ion movement across a neuronal membrane during an action potential, suppose a genetic mutation causes blue channels in a neuron to inactivate more slowly than normal. Which of the following effects would most likely occur in the neuron's action potential as a result of this mutation?\nA. The resting membrane potential would become more negative due to increased sodium permeability.\nB. The amplitude of the action potential peak would decrease due to reduced sodium influx.\nC. The repolarization phase of the action potential would be delayed, resulting in prolonged depolarization.\nD. The threshold for action potential initiation would be higher, making it harder to generate action potentials.\nE. The after-hyperpolarization phase would be more pronounced due to enhanced potassium efflux.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_131","media":["validation_131_0.mp4"],"messages":[{"role":"user","question":"What kind of biotechnology is reflected in the video?","answer":"E","hint":"","options":{"A":"DNA recombination","B":"Western blot","C":"RNA migration","D":"Frameshift mutation","E":"Molecular markers"},"choices":[],"video_id":"Biomedical_Engineering_1","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of biotechnology is reflected in the video?\nA. DNA recombination\nB. Western blot\nC. RNA migration\nD. Frameshift mutation\nE. Molecular markers\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_132","media":["validation_132_0.mp4"],"messages":[{"role":"user","question":"Based on the environmental changes described in the video, which of the following is the most likely impact on atmospheric carbon dioxide (CO₂) levels during this period of environmental change?","answer":"D","hint":"","options":{"A":"Atmospheric CO₂ levels decrease due to enhanced photosynthesis from increased phytoplankton growth in warm surface waters.","B":"Atmospheric CO₂ levels remain stable as oceanic CO₂ fluxes are balanced by terrestrial carbon uptake.","C":"Atmospheric CO₂ levels decrease due to increased carbon sequestration in deep ocean layers as warm water sinks.","D":"Atmospheric CO₂ levels increase due to reduced upwelling of nutrient-rich waters, leading to lower phytoplankton productivity and decreased CO₂ absorption.","E":"Atmospheric CO₂ levels fluctuate unpredictably due to complex interactions without a consistent pattern."},"choices":[],"video_id":"Biology_3","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Based on the environmental changes described in the video, which of the following is the most likely impact on atmospheric carbon dioxide (CO₂) levels during this period of environmental change?\nA. Atmospheric CO₂ levels decrease due to enhanced photosynthesis from increased phytoplankton growth in warm surface waters.\nB. Atmospheric CO₂ levels remain stable as oceanic CO₂ fluxes are balanced by terrestrial carbon uptake.\nC. Atmospheric CO₂ levels decrease due to increased carbon sequestration in deep ocean layers as warm water sinks.\nD. Atmospheric CO₂ levels increase due to reduced upwelling of nutrient-rich waters, leading to lower phytoplankton productivity and decreased CO₂ absorption.\nE. Atmospheric CO₂ levels fluctuate unpredictably due to complex interactions without a consistent pattern.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_133","media":["validation_133_0.mp4"],"messages":[{"role":"user","question":"The climate change that triggers the phenomenon shown in the video is called ______.","answer":"Southern Oscillation","hint":"","options":{},"choices":[],"video_id":"Biology_3","question_type":"open-ended","subject":"Geography","prompt":"<video>The climate change that triggers the phenomenon shown in the video is called ______."}]},{"id":"validation_134","media":["validation_134_0.mp4"],"messages":[{"role":"user","question":"What does the video describe","answer":"D","hint":"","options":{"A":"Law of refraction","B":"Law of reflection","C":"Single slit interference","D":"Double slit interference","E":"Scattering phenomenon"},"choices":[],"video_id":"Mechanics_4","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What does the video describe\nA. Law of refraction\nB. Law of reflection\nC. Single slit interference\nD. Double slit interference\nE. Scattering phenomenon\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_135","media":["validation_135_0.mp4"],"messages":[{"role":"user","question":"In the pneumatic system shown in the video, turning the small knob at the upper left adjusts the reference voltage, thereby modifying the pulse train's **_____**.","answer":"duty cycle","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_3","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>In the pneumatic system shown in the video, turning the small knob at the upper left adjusts the reference voltage, thereby modifying the pulse train's **_____**."}]},{"id":"validation_136","media":["validation_136_0.mp4"],"messages":[{"role":"user","question":"What does the video describe?","answer":"D","hint":"","options":{"A":"Law of Universal Gravitation","B":"Archimedes' Principle","C":"Pascal's Law","D":"Venturi's Law","E":"Boyle-Mariotte's Law"},"choices":[],"video_id":"Mechanics_5","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What does the video describe?\nA. Law of Universal Gravitation\nB. Archimedes' Principle\nC. Pascal's Law\nD. Venturi's Law\nE. Boyle-Mariotte's Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_137","media":["validation_137_0.mp4"],"messages":[{"role":"user","question":"In the mechanism depicted, the system has ______ degree(s) of freedom.","answer":"1","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_4","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>In the mechanism depicted, the system has ______ degree(s) of freedom."}]},{"id":"validation_138","media":["validation_138_0.mp4"],"messages":[{"role":"user","question":"What type of test is shown in the video?","answer":"E","hint":"","options":{"A":"Compression test","B":"Shear test","C":"Tensile test","D":"Bend test","E":"Torsion test"},"choices":[],"video_id":"Mechanical_Engineering_5","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>What type of test is shown in the video?\nA. Compression test\nB. Shear test\nC. Tensile test\nD. Bend test\nE. Torsion test\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_139","media":["validation_139_0.mp4"],"messages":[{"role":"user","question":"Which of the following conclusions is correct regarding the test setup and material behavior?","answer":"D","hint":"","options":{"A":"The material has failed due to reaching its maximum shear stress, indicated by the necking near the center.","B":"The clamps on both sides rotate in the same direction, ensuring uniform shear distribution.","C":"The specimen is tested in a pure tension setup rather than torsion, as evidenced by elongation at the center.","D":"The deformation pattern suggests the material is undergoing ductile failure.","E":"The video shows a brittle fracture, as evidenced by the sharp edges forming at the center of the specimen."},"choices":[],"video_id":"Mechanical_Engineering_5","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following conclusions is correct regarding the test setup and material behavior?\nA. The material has failed due to reaching its maximum shear stress, indicated by the necking near the center.\nB. The clamps on both sides rotate in the same direction, ensuring uniform shear distribution.\nC. The specimen is tested in a pure tension setup rather than torsion, as evidenced by elongation at the center.\nD. The deformation pattern suggests the material is undergoing ductile failure.\nE. The video shows a brittle fracture, as evidenced by the sharp edges forming at the center of the specimen.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_14","media":["validation_14_0.mp4"],"messages":[{"role":"user","question":"In contract law, an incident shown in the video is considered a _____ event that can impact the enforceability or performance of contractual terms.","answer":"force majeure","hint":"","options":{},"choices":[],"video_id":"Law_0","question_type":"open-ended","subject":"Law","prompt":"<video>In contract law, an incident shown in the video is considered a _____ event that can impact the enforceability or performance of contractual terms."}]},{"id":"validation_140","media":["validation_140_0.mp4"],"messages":[{"role":"user","question":"The type of antibody involved in the reaction shown in the video is immunoglobulin ____.","answer":"IgE","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_2","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The type of antibody involved in the reaction shown in the video is immunoglobulin ____."}]},{"id":"validation_141","media":["validation_141_0.mp4"],"messages":[{"role":"user","question":"According to the movements observed in the video, the robot system has one rotational joint and ___ prismatic joints.","answer":"two","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_6","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>According to the movements observed in the video, the robot system has one rotational joint and ___ prismatic joints."}]},{"id":"validation_142","media":["validation_142_0.mp4"],"messages":[{"role":"user","question":"To optimize the recursive computation of the algorithm illustrated in the video, one can apply the Dynamic Programming technique called **______**.","answer":"memoization","hint":"","options":{},"choices":[],"video_id":"Computer_Science_6","question_type":"open-ended","subject":"Computer Science","prompt":"<video>To optimize the recursive computation of the algorithm illustrated in the video, one can apply the Dynamic Programming technique called **______**."}]},{"id":"validation_143","media":["validation_143_0.mp4"],"messages":[{"role":"user","question":"What kind of idea of algorithm is used in the video?","answer":"C","hint":"","options":{"A":"divide and conquer","B":"parallel","C":"dynamic programming","D":"greedy","E":"backtracking"},"choices":[],"video_id":"Computer_Science_6","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of idea of algorithm is used in the video?\nA. divide and conquer\nB. parallel\nC. dynamic programming\nD. greedy\nE. backtracking\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_144","media":["validation_144_0.mp4"],"messages":[{"role":"user","question":"Without any optimization techniques applied, which of the following statements best describes the time complexity of this algorithm and suggests an appropriate method to improve its efficiency?","answer":"C","hint":"","options":{"A":"The algorithm has a time complexity of O(n) because it reduces the problem size by one in each recursive call; using tail recursion can optimize its space complexity.","B":"The algorithm has a time complexity of O(log n) due to the binary nature of the recursion; implementing a binary search strategy can improve its efficiency.","C":"The algorithm has a time complexity of O(2ⁿ) because it recalculates identical subproblems repeatedly; applying memoization can significantly enhance its performance.","D":"The algorithm has a time complexity of O(n²) as it involves a nested recursive structure; employing a divide-and-conquer approach can optimize it.","E":"The algorithm's efficiency is limited by the depth of recursion, which is linear; converting the recursion to iteration using a loop can improve its time complexity."},"choices":[],"video_id":"Computer_Science_6","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Without any optimization techniques applied, which of the following statements best describes the time complexity of this algorithm and suggests an appropriate method to improve its efficiency?\nA. The algorithm has a time complexity of O(n) because it reduces the problem size by one in each recursive call; using tail recursion can optimize its space complexity.\nB. The algorithm has a time complexity of O(log n) due to the binary nature of the recursion; implementing a binary search strategy can improve its efficiency.\nC. The algorithm has a time complexity of O(2ⁿ) because it recalculates identical subproblems repeatedly; applying memoization can significantly enhance its performance.\nD. The algorithm has a time complexity of O(n²) as it involves a nested recursive structure; employing a divide-and-conquer approach can optimize it.\nE. The algorithm's efficiency is limited by the depth of recursion, which is linear; converting the recursion to iteration using a loop can improve its time complexity.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_145","media":["validation_145_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes the growth rate of the total number of function calls made during the computation without optimization, and identifies a method to improve the algorithm's efficiency to achieve linear time complexity?","answer":"A","hint":"","options":{"A":"The number of function calls grows exponentially with `n`, corresponding to O(2^n); applying memoization converts the algorithm to linear time complexity O(n).","B":"The number of function calls grows linearly with `n`, corresponding to O(n); using an iterative approach maintains the same time complexity but reduces space complexity.","C":"The number of function calls grows logarithmically with `n`, corresponding to O(log n); employing divide-and-conquer techniques can optimize further.","D":"The number of function calls grows quadratically with `n`, corresponding to O(n^2); tail recursion can improve time efficiency.","E":"The number of function calls grows factorially with `n`, corresponding to O(n!); parallel processing can significantly reduce computation time."},"choices":[],"video_id":"Computer_Science_6","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements correctly describes the growth rate of the total number of function calls made during the computation without optimization, and identifies a method to improve the algorithm's efficiency to achieve linear time complexity?\nA. The number of function calls grows exponentially with `n`, corresponding to O(2^n); applying memoization converts the algorithm to linear time complexity O(n).\nB. The number of function calls grows linearly with `n`, corresponding to O(n); using an iterative approach maintains the same time complexity but reduces space complexity.\nC. The number of function calls grows logarithmically with `n`, corresponding to O(log n); employing divide-and-conquer techniques can optimize further.\nD. The number of function calls grows quadratically with `n`, corresponding to O(n^2); tail recursion can improve time efficiency.\nE. The number of function calls grows factorially with `n`, corresponding to O(n!); parallel processing can significantly reduce computation time.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_146","media":["validation_146_0.mp4"],"messages":[{"role":"user","question":"Using the method in the video, if the number to be converted is 16, what is the first digit in the middle of the video from left to right?","answer":"E","hint":"","options":{"A":"6","B":"5","C":"2","D":"3","E":"4"},"choices":[],"video_id":"Electrical_Engineering_2","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Using the method in the video, if the number to be converted is 16, what is the first digit in the middle of the video from left to right?\nA. 6\nB. 5\nC. 2\nD. 3\nE. 4\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_147","media":["validation_147_0.mp4"],"messages":[{"role":"user","question":"Using the method demonstrated in the video, if the number to be processed is 150, which position in the video (from left to right) should be 1?","answer":"C","hint":"","options":{"A":"1, 3","B":"1, 2, 5","C":"1, 4, 6, 7","D":"2, 5, 7, 8","E":"2, 3, 6"},"choices":[],"video_id":"Electrical_Engineering_2","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Using the method demonstrated in the video, if the number to be processed is 150, which position in the video (from left to right) should be 1?\nA. 1, 3\nB. 1, 2, 5\nC. 1, 4, 6, 7\nD. 2, 5, 7, 8\nE. 2, 3, 6\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_148","media":["validation_148_0.mp4"],"messages":[{"role":"user","question":"Using the method demonstrated in the video, suppose you invert the bits of the binary representation after processing, obtaining a new binary number. Finally, using the same method, you convert this inverted binary number back into decimal. If the final decimal number is 150, what was the original decimal number N?","answer":"C","hint":"","options":{"A":"75","B":"90","C":"105","D":"112","E":"121"},"choices":[],"video_id":"Electrical_Engineering_2","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Using the method demonstrated in the video, suppose you invert the bits of the binary representation after processing, obtaining a new binary number. Finally, using the same method, you convert this inverted binary number back into decimal. If the final decimal number is 150, what was the original decimal number N?\nA. 75\nB. 90\nC. 105\nD. 112\nE. 121\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_149","media":["validation_149_0.mp4"],"messages":[{"role":"user","question":"The subdivision of the system that independently regulates the mentioned mechanical and chemical process shown in the video is called the **______** nervous system.","answer":"enteric","hint":"","options":{},"choices":[],"video_id":"Neurobiology_6","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The subdivision of the system that independently regulates the mentioned mechanical and chemical process shown in the video is called the **______** nervous system."}]},{"id":"validation_15","media":["validation_15_0.mp4"],"messages":[{"role":"user","question":"Why do light bulbs glow differently when different metal rods are inserted?","answer":"C","hint":"","options":{"A":"Different metal rods have different magnetic permeabilities. Metal rods with high magnetic permeability make light bulbs brighter.","B":"Different metal rods have different resistances. Metal rods with lower resistance make the bulb brighter.","C":"Different metal rods have different magnetic permeabilities. Metal rods with high magnetic permeability make the bulb darker.","D":"Different metal rods have different magnetic field strengths. Metal rods with lower magnetic field strengths make the bulb dimmer.","E":"Different metal rods have different resistances. Metal rods with higher resistance make the bulb brighter."},"choices":[],"video_id":"Electrical_Engineering_1","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Why do light bulbs glow differently when different metal rods are inserted?\nA. Different metal rods have different magnetic permeabilities. Metal rods with high magnetic permeability make light bulbs brighter.\nB. Different metal rods have different resistances. Metal rods with lower resistance make the bulb brighter.\nC. Different metal rods have different magnetic permeabilities. Metal rods with high magnetic permeability make the bulb darker.\nD. Different metal rods have different magnetic field strengths. Metal rods with lower magnetic field strengths make the bulb dimmer.\nE. Different metal rods have different resistances. Metal rods with higher resistance make the bulb brighter.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_150","media":["validation_150_0.mp4"],"messages":[{"role":"user","question":"Based on the condition demonstrated in the video, which of the following considerations is most critical when selecting a local anaesthetic for this type of patient?","answer":"E","hint":"","options":{"A":"Avoid using anesthetics with vasoconstrictors to prevent hypertensive crises","B":"Adjust anesthetic dosage due to impaired renal excretion","C":"Monitor for methemoglobinemia when using prilocaine","D":"Avoid ester-type anesthetics to prevent allergic reactions","E":"Acoid amide-type anesthetics due to liver involvement"},"choices":[],"video_id":"Pharmacy_3","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the condition demonstrated in the video, which of the following considerations is most critical when selecting a local anaesthetic for this type of patient?\nA. Avoid using anesthetics with vasoconstrictors to prevent hypertensive crises\nB. Adjust anesthetic dosage due to impaired renal excretion\nC. Monitor for methemoglobinemia when using prilocaine\nD. Avoid ester-type anesthetics to prevent allergic reactions\nE. Acoid amide-type anesthetics due to liver involvement\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_151","media":["validation_151_0.mp4"],"messages":[{"role":"user","question":"For the first signal shown in the video, if expressed using a Fourier series, the non-zero coefficients occur only at _____ harmonics of the fundamental frequency.","answer":"odd","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_3","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>For the first signal shown in the video, if expressed using a Fourier series, the non-zero coefficients occur only at _____ harmonics of the fundamental frequency."}]},{"id":"validation_152","media":["validation_152_0.mp4"],"messages":[{"role":"user","question":"Based on the imaging principles, during the process shown in the video, the image size becomes ______.","answer":"bigger","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_0","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>Based on the imaging principles, during the process shown in the video, the image size becomes ______."}]},{"id":"validation_153","media":["validation_153_0.mp4"],"messages":[{"role":"user","question":"What kind of lens is in the video?","answer":"B","hint":"","options":{"A":"Bi-concave","B":"Bi-convex","C":"Unable to determine","D":"Cylindrical lens","E":"Planoconcave"},"choices":[],"video_id":"Modern_Physics_0","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>What kind of lens is in the video?\nA. Bi-concave\nB. Bi-convex\nC. Unable to determine\nD. Cylindrical lens\nE. Planoconcave\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_154","media":["validation_154_0.mp4"],"messages":[{"role":"user","question":"In this experiment, the signal is known to use frequency modulation (FM) with a rectangular modulation waveform. The theoretical bandwidth of this signal is approximately __________ kHz.","answer":"140","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_4","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>In this experiment, the signal is known to use frequency modulation (FM) with a rectangular modulation waveform. The theoretical bandwidth of this signal is approximately __________ kHz."}]},{"id":"validation_155","media":["validation_155_0.mp4"],"messages":[{"role":"user","question":"According to the display on the spectrum analyzer, how is the modulated signal distributed?","answer":"D","hint":"","options":{"A":"Poisson","B":"Exponential","C":"Gaussian","D":"Periodical","E":"Binomial"},"choices":[],"video_id":"Electronics_and_Communication_4","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>According to the display on the spectrum analyzer, how is the modulated signal distributed?\nA. Poisson\nB. Exponential\nC. Gaussian\nD. Periodical\nE. Binomial\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_156","media":["validation_156_0.mp4"],"messages":[{"role":"user","question":"What's the next step in the video?","answer":"D","hint":"","options":{"A":"remove guidewire","B":"secure the puncture site","C":"flush the catheter","D":"remove needle","E":"dilate vessel"},"choices":[],"video_id":"Clinical_Medicine_4","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What's the next step in the video?\nA. remove guidewire\nB. secure the puncture site\nC. flush the catheter\nD. remove needle\nE. dilate vessel\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_157","media":["validation_157_0.mp4"],"messages":[{"role":"user","question":"In the illustration shown in the video, this short story demonstrates the theory known as the ______ hypothesis.","answer":"Sapir-Whorf","hint":"","options":{},"choices":[],"video_id":"Literature_2","question_type":"open-ended","subject":"Literature","prompt":"<video>In the illustration shown in the video, this short story demonstrates the theory known as the ______ hypothesis."}]},{"id":"validation_158","media":["validation_158_0.mp4"],"messages":[{"role":"user","question":"Watch the video, use Sapir-Whorf hypothesis to explain, and think about how this language system will affect the behavior pattern of language users.","answer":"E","hint":"","options":{"A":"Users of this language will frequently use relative directions, like left and right, instead of absolute ones.","B":"Users of this language will find it difficult to learn new spatial concepts.","C":"Users of this language's spatial perception ability will be limited, and no directional description can be made.","D":"Users of this language will lose their way without a clear direction sign.","E":"Users of this language may form a stronger spatial perception of absolute directions ."},"choices":[],"video_id":"Literature_2","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Watch the video, use Sapir-Whorf hypothesis to explain, and think about how this language system will affect the behavior pattern of language users.\nA. Users of this language will frequently use relative directions, like left and right, instead of absolute ones.\nB. Users of this language will find it difficult to learn new spatial concepts.\nC. Users of this language's spatial perception ability will be limited, and no directional description can be made.\nD. Users of this language will lose their way without a clear direction sign.\nE. Users of this language may form a stronger spatial perception of absolute directions .\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_159","media":["validation_159_0.mp4"],"messages":[{"role":"user","question":"Based on the video description and considering the Sapir-Whorf hypothesis about the influence of language on cognition and behavior, which of the following best explains how the language system depicted affects the behavior patterns of its users?","answer":"D","hint":"","options":{"A":"Users of this language rely primarily on relative spatial terms like 'left' and 'right', which limits their ability to navigate unfamiliar environments.","B":"The absence of specific spatial terminology in this language hinders users' ability to perceive and describe directions, leading to a limited spatial perception.","C":"The language's complex syntactic structures make it difficult for users to communicate spatial information efficiently.","D":"The language's use of absolute cardinal directions enhances users' spatial awareness and navigational abilities, enabling them to orient themselves precisely in any environment.","E":"Users of this language depend entirely on external directional signs for navigation due to the lack of inherent spatial terms in their language."},"choices":[],"video_id":"Literature_2","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the video description and considering the Sapir-Whorf hypothesis about the influence of language on cognition and behavior, which of the following best explains how the language system depicted affects the behavior patterns of its users?\nA. Users of this language rely primarily on relative spatial terms like 'left' and 'right', which limits their ability to navigate unfamiliar environments.\nB. The absence of specific spatial terminology in this language hinders users' ability to perceive and describe directions, leading to a limited spatial perception.\nC. The language's complex syntactic structures make it difficult for users to communicate spatial information efficiently.\nD. The language's use of absolute cardinal directions enhances users' spatial awareness and navigational abilities, enabling them to orient themselves precisely in any environment.\nE. Users of this language depend entirely on external directional signs for navigation due to the lack of inherent spatial terms in their language.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_16","media":["validation_16_0.mp4"],"messages":[{"role":"user","question":"The climatic event affecting the climate during the period shown in the video is known as **______**.","answer":"El Niño","hint":"","options":{},"choices":[],"video_id":"Biology_0","question_type":"open-ended","subject":"Biology","prompt":"<video>The climatic event affecting the climate during the period shown in the video is known as **______**."}]},{"id":"validation_160","media":["validation_160_0.mp4"],"messages":[{"role":"user","question":"Based on the video description and your knowledge of linguistic relativity, which of the following statements best explains how the depicted language system influences cognitive abilities?","answer":"D","hint":"","options":{"A":"The language relies on relative spatial terms like 'left' and 'right', limiting users' ability to navigate unfamiliar environments, similar to English speakers.","B":"The language lacks specific spatial terminology, hindering users' ability to perceive and describe directions, akin to certain Amazonian tribes with limited spatial vocabulary.","C":"The language's complex syntactic structures make it difficult to communicate spatial information efficiently, reflecting the polysynthetic nature of languages like Inuktitut.","D":"The language uses absolute cardinal directions in everyday communication, enhancing users' spatial awareness and navigation abilities, similar to the Guugu Yimithirr people of Australia.","E":"The language emphasizes temporal concepts over spatial ones, causing users to prioritize sequences of events rather than physical orientation, much like the Hopi language speakers."},"choices":[],"video_id":"Literature_2","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the video description and your knowledge of linguistic relativity, which of the following statements best explains how the depicted language system influences cognitive abilities?\nA. The language relies on relative spatial terms like 'left' and 'right', limiting users' ability to navigate unfamiliar environments, similar to English speakers.\nB. The language lacks specific spatial terminology, hindering users' ability to perceive and describe directions, akin to certain Amazonian tribes with limited spatial vocabulary.\nC. The language's complex syntactic structures make it difficult to communicate spatial information efficiently, reflecting the polysynthetic nature of languages like Inuktitut.\nD. The language uses absolute cardinal directions in everyday communication, enhancing users' spatial awareness and navigation abilities, similar to the Guugu Yimithirr people of Australia.\nE. The language emphasizes temporal concepts over spatial ones, causing users to prioritize sequences of events rather than physical orientation, much like the Hopi language speakers.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_161","media":["validation_161_0.mp4"],"messages":[{"role":"user","question":"Based on the dietary habits and pathological changes of the character in the animation, if further inflammatory responses occur, he is highly likely to develop  ________. ","answer":"non-alcoholic steatohepatitis","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_5","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the dietary habits and pathological changes of the character in the animation, if further inflammatory responses occur, he is highly likely to develop  ________. "}]},{"id":"validation_162","media":["validation_162_0.mp4"],"messages":[{"role":"user","question":"Due to the environment shown in the video, the clay deposits in that area are likely to be highly **_______**.","answer":"flocculent","hint":"","options":{},"choices":[],"video_id":"Geography_1","question_type":"open-ended","subject":"Geography","prompt":"<video>Due to the environment shown in the video, the clay deposits in that area are likely to be highly **_______**."}]},{"id":"validation_163","media":["validation_163_0.mp4"],"messages":[{"role":"user","question":"The shortest distance from the source node 'a' to the target node 'g' is **_____**.","answer":"2","hint":"","options":{},"choices":[],"video_id":"Computer_Science_7","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The shortest distance from the source node 'a' to the target node 'g' is **_____**."}]},{"id":"validation_164","media":["validation_164_0.mp4"],"messages":[{"role":"user","question":"In the experiment demonstrated in the video, the critical force is known as the **_______** force.","answer":"Lorentz","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_13","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the experiment demonstrated in the video, the critical force is known as the **_______** force."}]},{"id":"validation_165","media":["validation_165_0.mp4"],"messages":[{"role":"user","question":"In the video, which of the following forces explains the observed phenomenon?","answer":"B","hint":"","options":{"A":"Ampere Force","B":"Lorentz Force","C":"Electric Force","D":"Elastic Force","E":"Frictional Force"},"choices":[],"video_id":"Electromagnetism_13","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>In the video, which of the following forces explains the observed phenomenon?\nA. Ampere Force\nB. Lorentz Force\nC. Electric Force\nD. Elastic Force\nE. Frictional Force\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_166","media":["validation_166_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the observed phenomenon?","answer":"B","hint":"","options":{"A":"The electrons in the filament are accelerated by an external electric field, and as they interact with the magnetic field, they experience a force that causes the filament to bend and trace the 'W' shape.","B":"The electrons experience a Lorentz force directed out of the bulb towards the observer due to the magnetic field, causing the filament to curve and forming the 'W' shape.","C":"The magnetic field from the magnet induces a circular electric field around it, causing the electrons to move in circles and forming the 'W' shape.","D":"The localized heating causes convection currents in the gas inside the bulb, and these currents are deflected by the magnetic field, forming the 'W' shape.","E":"The magnet induces eddy currents in the filament, and the interaction between these currents and the magnetic field causes the bright spot to move in an 'W' pattern."},"choices":[],"video_id":"Electromagnetism_13","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the observed phenomenon?\nA. The electrons in the filament are accelerated by an external electric field, and as they interact with the magnetic field, they experience a force that causes the filament to bend and trace the 'W' shape.\nB. The electrons experience a Lorentz force directed out of the bulb towards the observer due to the magnetic field, causing the filament to curve and forming the 'W' shape.\nC. The magnetic field from the magnet induces a circular electric field around it, causing the electrons to move in circles and forming the 'W' shape.\nD. The localized heating causes convection currents in the gas inside the bulb, and these currents are deflected by the magnetic field, forming the 'W' shape.\nE. The magnet induces eddy currents in the filament, and the interaction between these currents and the magnetic field causes the bright spot to move in an 'W' pattern.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_167","media":["validation_167_0.mp4"],"messages":[{"role":"user","question":"Which stage of drug clinical trials is shown in the video?","answer":"C","hint":"","options":{"A":"Exploratory Trials","B":"Phase I Clinical Trials","C":"Phase III Clinical Trials","D":"Phase II Clinical Trials","E":"Phase IV Clinical Trials"},"choices":[],"video_id":"Pharmacy_4","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which stage of drug clinical trials is shown in the video?\nA. Exploratory Trials\nB. Phase I Clinical Trials\nC. Phase III Clinical Trials\nD. Phase II Clinical Trials\nE. Phase IV Clinical Trials\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_168","media":["validation_168_0.mp4"],"messages":[{"role":"user","question":"The gangway arm in video is most likely operated using a(n) **___________** power system.","answer":"hydraulic","hint":"","options":{},"choices":[],"video_id":"Mechanics_6","question_type":"open-ended","subject":"Mechanics","prompt":"<video>The gangway arm in video is most likely operated using a(n) **___________** power system."}]},{"id":"validation_169","media":["validation_169_0.mp4"],"messages":[{"role":"user","question":"Which of the following is another application of the principle in the video in life? ","answer":"D","hint":"","options":{"A":"Generator","B":"Thermometer","C":"Light bulb","D":"Hydraulic jack","E":"Speedometer"},"choices":[],"video_id":"Mechanics_6","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following is another application of the principle in the video in life? \nA. Generator\nB. Thermometer\nC. Light bulb\nD. Hydraulic jack\nE. Speedometer\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_17","media":["validation_17_0.mp4"],"messages":[{"role":"user","question":"What kind of mechanical transformation is not represented in the video?","answer":"D","hint":"","options":{"A":"It may convert gravitational energy into elastic energy.","B":"It may convert one force to another force.","C":"It may convert one speed to another speed.","D":"It may convert linear motion into rotational motion.","E":"It may convert gravitational energy to kinetic energy."},"choices":[],"video_id":"Mechanical_Engineering_1","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>What kind of mechanical transformation is not represented in the video?\nA. It may convert gravitational energy into elastic energy.\nB. It may convert one force to another force.\nC. It may convert one speed to another speed.\nD. It may convert linear motion into rotational motion.\nE. It may convert gravitational energy to kinetic energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_170","media":["validation_170_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following devices employs a similar mechanical principle to maintain balance and stability?","answer":"B","hint":"","options":{"A":"A mechanical metronome","B":"A Segway personal transporter","C":"A fixed-gear bicycle","D":"A pendulum clock","E":"A manual car jack"},"choices":[],"video_id":"Mechanics_6","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Based on the video, which of the following devices employs a similar mechanical principle to maintain balance and stability?\nA. A mechanical metronome\nB. A Segway personal transporter\nC. A fixed-gear bicycle\nD. A pendulum clock\nE. A manual car jack\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_171","media":["validation_171_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following types of control systems is most likely employed to achieve the motion compensation for the gangway?","answer":"E","hint":"","options":{"A":"An open-loop control system utilizing preset mechanical adjustments.","B":"A gyroscopic stabilization system based on conservation of angular momentum.","C":"A hydraulic system with fixed flow rates designed for average sea conditions.","D":"A mechanical counterweight system that balances the gangway using weights.","E":"An active closed-loop control system incorporating sensors, real-time data processing, and actuators to counteract vessel motion."},"choices":[],"video_id":"Mechanics_6","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Based on the video, which of the following types of control systems is most likely employed to achieve the motion compensation for the gangway?\nA. An open-loop control system utilizing preset mechanical adjustments.\nB. A gyroscopic stabilization system based on conservation of angular momentum.\nC. A hydraulic system with fixed flow rates designed for average sea conditions.\nD. A mechanical counterweight system that balances the gangway using weights.\nE. An active closed-loop control system incorporating sensors, real-time data processing, and actuators to counteract vessel motion.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_172","media":["validation_172_0.mp4"],"messages":[{"role":"user","question":"In a population of 1,000 individuals, what is the minimum number of people that need to be immunized to prevent an outbreak of this disease in video (achieve herd immunity)?","answer":"C","hint":"","options":{"A":"200","B":"400","C":"800","D":"850","E":"900"},"choices":[],"video_id":"Preventive_Medicine_2","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>In a population of 1,000 individuals, what is the minimum number of people that need to be immunized to prevent an outbreak of this disease in video (achieve herd immunity)?\nA. 200\nB. 400\nC. 800\nD. 850\nE. 900\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_173","media":["validation_173_0.mp4"],"messages":[{"role":"user","question":"What kind of energy transformation occurs in the video?","answer":"E","hint":"","options":{"A":"Thermal energy is converted into electrical energy.","B":"There is no energy conversion.","C":"Sound energy is converted into light energy.","D":"Sound energy is converted into electrical energy.","E":"Mechanical energy is converted into electrical energy."},"choices":[],"video_id":"Electromagnetism_14","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>What kind of energy transformation occurs in the video?\nA. Thermal energy is converted into electrical energy.\nB. There is no energy conversion.\nC. Sound energy is converted into light energy.\nD. Sound energy is converted into electrical energy.\nE. Mechanical energy is converted into electrical energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_174","media":["validation_174_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the primary reason for the rapid decay of the waveform observed on the oscilloscope?","answer":"C","hint":"","options":{"A":"The magnetic field strength of the guitar pickups decreases rapidly over time after the strings are strummed, reducing the induced voltage.","B":"The oscilloscope's input impedance is too low, causing it to absorb energy from the pickups and leading to rapid signal decay.","C":"The induced current in the pickup coils creates a magnetic field that opposes the motion of the strings, causing electromagnetic damping and rapid signal decay.","D":"The electrical resistance of the pickup coils leads to significant thermal energy loss (Joule heating), causing rapid signal decay.","E":"Capacitive coupling between the strings and the oscilloscope causes the signal to attenuate quickly due to capacitive discharge."},"choices":[],"video_id":"Electromagnetism_14","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the primary reason for the rapid decay of the waveform observed on the oscilloscope?\nA. The magnetic field strength of the guitar pickups decreases rapidly over time after the strings are strummed, reducing the induced voltage.\nB. The oscilloscope's input impedance is too low, causing it to absorb energy from the pickups and leading to rapid signal decay.\nC. The induced current in the pickup coils creates a magnetic field that opposes the motion of the strings, causing electromagnetic damping and rapid signal decay.\nD. The electrical resistance of the pickup coils leads to significant thermal energy loss (Joule heating), causing rapid signal decay.\nE. Capacitive coupling between the strings and the oscilloscope causes the signal to attenuate quickly due to capacitive discharge.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_175","media":["validation_175_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why the signal decays more rapidly than it would if the guitar were connected to a typical guitar amplifier, compared to the setting in the video?","answer":"D","hint":"","options":{"A":"The oscilloscope's input capacitance forms a low-pass filter with the pickup, attenuating high-frequency signals and causing rapid signal decay.","B":"The low output impedance of the pickups prevents efficient energy transfer to the oscilloscope, resulting in rapid decay.","C":"The magnetic fields in the pickups collapse quickly after the strings are strummed, leading to a rapid decrease in induced voltage.","D":"The low input impedance of the oscilloscope loads the pickups, causing energy to dissipate quickly through the oscilloscope input, leading to rapid signal decay.","E":"The absence of amplification means the natural damping of the string vibrations is more apparent, causing rapid signal decay."},"choices":[],"video_id":"Electromagnetism_14","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains why the signal decays more rapidly than it would if the guitar were connected to a typical guitar amplifier, compared to the setting in the video?\nA. The oscilloscope's input capacitance forms a low-pass filter with the pickup, attenuating high-frequency signals and causing rapid signal decay.\nB. The low output impedance of the pickups prevents efficient energy transfer to the oscilloscope, resulting in rapid decay.\nC. The magnetic fields in the pickups collapse quickly after the strings are strummed, leading to a rapid decrease in induced voltage.\nD. The low input impedance of the oscilloscope loads the pickups, causing energy to dissipate quickly through the oscilloscope input, leading to rapid signal decay.\nE. The absence of amplification means the natural damping of the string vibrations is more apparent, causing rapid signal decay.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_176","media":["validation_176_0.mp4"],"messages":[{"role":"user","question":"Based on the apparatus demonstrated in the video, this is a simple ______ generator.","answer":"DC","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_3","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>Based on the apparatus demonstrated in the video, this is a simple ______ generator."}]},{"id":"validation_177","media":["validation_177_0.mp4"],"messages":[{"role":"user","question":"What is the heat transfer method in the video?","answer":"B","hint":"","options":{"A":"Thermal convection. Heat is transferred from above to below.","B":"Thermal convection. Heat is transferred from below to above.","C":"Thermal radiation. Heat is transferred from above to below.","D":"Thermal radiation. Heat is transferred from below to above.","E":"Heat conduction. Heat is transferred from below to above."},"choices":[],"video_id":"Thermodynamics_1","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>What is the heat transfer method in the video?\nA. Thermal convection. Heat is transferred from above to below.\nB. Thermal convection. Heat is transferred from below to above.\nC. Thermal radiation. Heat is transferred from above to below.\nD. Thermal radiation. Heat is transferred from below to above.\nE. Heat conduction. Heat is transferred from below to above.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_178","media":["validation_178_0.mp4"],"messages":[{"role":"user","question":"It is known as **______** in the construction shown in the video.","answer":"shoring","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_2","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>It is known as **______** in the construction shown in the video."}]},{"id":"validation_179","media":["validation_179_0.mp4"],"messages":[{"role":"user","question":"The woman playing in the video is primarily demonstrating her **_____** memory.","answer":"implicit","hint":"","options":{},"choices":[],"video_id":"Neurobiology_7","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The woman playing in the video is primarily demonstrating her **_____** memory."}]},{"id":"validation_18","media":["validation_18_0.mp4"],"messages":[{"role":"user","question":"Which of the following biological events in the eastern Pacific Ocean is most likely to occur due to the phenomenon shown?","answer":"A","hint":"","options":{"A":"A decrease in primary productivity due to reduced nutrient upwelling.","B":"An increase in marine biodiversity due to enhanced nutrient availability.","C":"Coral reef expansion due to cooler sea surface temperatures.","D":"A surge in fish populations along the coast due to favorable breeding conditions.","E":"A widespread algal bloom caused by increased nutrient runoff."},"choices":[],"video_id":"Biology_0","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Which of the following biological events in the eastern Pacific Ocean is most likely to occur due to the phenomenon shown?\nA. A decrease in primary productivity due to reduced nutrient upwelling.\nB. An increase in marine biodiversity due to enhanced nutrient availability.\nC. Coral reef expansion due to cooler sea surface temperatures.\nD. A surge in fish populations along the coast due to favorable breeding conditions.\nE. A widespread algal bloom caused by increased nutrient runoff.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_180","media":["validation_180_0.mp4"],"messages":[{"role":"user","question":"What type of soil is present in this area?","answer":"coarse-grained","hint":"","options":{},"choices":[],"video_id":"Geography_2","question_type":"open-ended","subject":"Geography","prompt":"<video>What type of soil is present in this area?"}]},{"id":"validation_181","media":["validation_181_0.mp4"],"messages":[{"role":"user","question":"When the operators rotate the knob, how does the polarization angle between two polarizing filter changes?","answer":"A","hint":"","options":{"A":"Bigger","B":"Smaller first, then bigger","C":"Remains unchanged","D":"Bigger first, then smaller","E":"Smaller"},"choices":[],"video_id":"Modern_Physics_1","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>When the operators rotate the knob, how does the polarization angle between two polarizing filter changes?\nA. Bigger\nB. Smaller first, then bigger\nC. Remains unchanged\nD. Bigger first, then smaller\nE. Smaller\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_182","media":["validation_182_0.mp4"],"messages":[{"role":"user","question":"Which method was not used in the experiment to reduce the intensity of electromagnetic waves?","answer":"C","hint":"","options":{"A":"Place the mobile phone in the wire mesh with a small gap.","B":"Keep the phone away from the measuring device.","C":"Replace the propagation medium.","D":"Place the phone in a wire mesh with the lid uncovered.","E":"Place the mobile phone in the wire mesh with large gaps."},"choices":[],"video_id":"Electrical_Engineering_4","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which method was not used in the experiment to reduce the intensity of electromagnetic waves?\nA. Place the mobile phone in the wire mesh with a small gap.\nB. Keep the phone away from the measuring device.\nC. Replace the propagation medium.\nD. Place the phone in a wire mesh with the lid uncovered.\nE. Place the mobile phone in the wire mesh with large gaps.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_183","media":["validation_183_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why the last used setting is more effective than the second and the third setting?","answer":"A","hint":"","options":{"A":"The last setting acts as a continuous conductive barrier that reflects and absorbs the electromagnetic waves, whereas the large gaps in the second and third setting allow the waves to pass through.","B":"The thickness of the the last setting is sufficient to block the electromagnetic waves due to the skin effect, whereas the second or third settings are insufficient.","C":"The frequency of the mobile phone's radiation cannot penetrate the continuous conductive surface of the last setting but can easily pass through the second or the third setting regardless of gap size.","D":"The cardboard box acts as a dielectric barrier enhancing the shielding effect of the last setting, while the second and the third one lack this dielectric enhancement.","E":"The last setting has inherent properties of absorbing electromagnetic waves due to its high conductivity, whereas the metal used in the second or third setting does not have such properties."},"choices":[],"video_id":"Electrical_Engineering_4","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following best explains why the last used setting is more effective than the second and the third setting?\nA. The last setting acts as a continuous conductive barrier that reflects and absorbs the electromagnetic waves, whereas the large gaps in the second and third setting allow the waves to pass through.\nB. The thickness of the the last setting is sufficient to block the electromagnetic waves due to the skin effect, whereas the second or third settings are insufficient.\nC. The frequency of the mobile phone's radiation cannot penetrate the continuous conductive surface of the last setting but can easily pass through the second or the third setting regardless of gap size.\nD. The cardboard box acts as a dielectric barrier enhancing the shielding effect of the last setting, while the second and the third one lack this dielectric enhancement.\nE. The last setting has inherent properties of absorbing electromagnetic waves due to its high conductivity, whereas the metal used in the second or third setting does not have such properties.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_184","media":["validation_184_0.mp4"],"messages":[{"role":"user","question":"What kind of phenomenon is showed in the video?","answer":"E","hint":"","options":{"A":"Afterimage Effect","B":"Autokinetic Effect","C":"Mueller-Lyer Illusion","D":"Phi Phenomenon","E":"Persistence of vision"},"choices":[],"video_id":"Art_1","question_type":"multiple-choice","subject":"Art","prompt":"<video>What kind of phenomenon is showed in the video?\nA. Afterimage Effect\nB. Autokinetic Effect\nC. Mueller-Lyer Illusion\nD. Phi Phenomenon\nE. Persistence of vision\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_185","media":["validation_185_0.mp4"],"messages":[{"role":"user","question":"What art movement or style is most closely associated with those seen in the video?","answer":"C","hint":"","options":{"A":"Surrealism","B":"Abstract Expressionism","C":"Kinetic Art","D":"Pop Art","E":"Futurism"},"choices":[],"video_id":"Art_1","question_type":"multiple-choice","subject":"Art","prompt":"<video>What art movement or style is most closely associated with those seen in the video?\nA. Surrealism\nB. Abstract Expressionism\nC. Kinetic Art\nD. Pop Art\nE. Futurism\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_186","media":["validation_186_0.mp4"],"messages":[{"role":"user","question":"Which of the following historical inventions would they most likely identify as a direct predecessor employing a similar optical principle?","answer":"A","hint":"","options":{"A":"Zoetrope","B":"Camera Obscura","C":"Daguerreotype","D":"Stereoscope","E":"Magic Lantern"},"choices":[],"video_id":"Art_1","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following historical inventions would they most likely identify as a direct predecessor employing a similar optical principle?\nA. Zoetrope\nB. Camera Obscura\nC. Daguerreotype\nD. Stereoscope\nE. Magic Lantern\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_187","media":["validation_187_0.mp4"],"messages":[{"role":"user","question":"Which of the following best describes the role of the object shown in the video in the economy?","answer":"C","hint":"","options":{"A":"It is only a supporting role in economic development.","B":"It hinders market competition and leads to economic inefficiency.","C":"It is an important pillar of the economy, promoting industrial upgrading and employment.","D":"It primarily serves as a consumer base without impacting industrial growth.","E":"It solely focuses on technological innovation without influencing job creation."},"choices":[],"video_id":"Economics_2","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following best describes the role of the object shown in the video in the economy?\nA. It is only a supporting role in economic development.\nB. It hinders market competition and leads to economic inefficiency.\nC. It is an important pillar of the economy, promoting industrial upgrading and employment.\nD. It primarily serves as a consumer base without impacting industrial growth.\nE. It solely focuses on technological innovation without influencing job creation.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_188","media":["validation_188_0.mp4"],"messages":[{"role":"user","question":"Which of the following describes a major economic concern arising from this situation, and what policy measure would most effectively address it?","answer":"D","hint":"","options":{"A":"The dominance of conglomerates ensures economic stability; thus, maintaining current policies is crucial to prevent market volatility.","B":"The concentration reduces unemployment through conglomerate expansion; therefore, offering tax incentives to these conglomerates will sustain job growth.","C":"The economic power of conglomerates leads to increased technological innovation; as a result, increasing subsidies to these conglomerates will further boost innovation.","D":"The overwhelming dominance of conglomerates suppresses small and medium-sized enterprises (SMEs), limiting competition and innovation; hence, implementing antitrust regulations will promote a more balanced and competitive economy.","E":"The concentration of conglomerates increases export revenues; therefore, reducing export taxes on these conglomerates will enhance national income."},"choices":[],"video_id":"Economics_2","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following describes a major economic concern arising from this situation, and what policy measure would most effectively address it?\nA. The dominance of conglomerates ensures economic stability; thus, maintaining current policies is crucial to prevent market volatility.\nB. The concentration reduces unemployment through conglomerate expansion; therefore, offering tax incentives to these conglomerates will sustain job growth.\nC. The economic power of conglomerates leads to increased technological innovation; as a result, increasing subsidies to these conglomerates will further boost innovation.\nD. The overwhelming dominance of conglomerates suppresses small and medium-sized enterprises (SMEs), limiting competition and innovation; hence, implementing antitrust regulations will promote a more balanced and competitive economy.\nE. The concentration of conglomerates increases export revenues; therefore, reducing export taxes on these conglomerates will enhance national income.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_189","media":["validation_189_0.mp4"],"messages":[{"role":"user","question":"In the video, based on the actions of the doctor and the patient, she is assessing the _______ reflex.","answer":"triceps","hint":"","options":{},"choices":[],"video_id":"Neurobiology_8","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, based on the actions of the doctor and the patient, she is assessing the _______ reflex."}]},{"id":"validation_19","media":["validation_19_0.mp4"],"messages":[{"role":"user","question":"Based on the oceanic changes depicted in the video, which of the following best explains how the phenomenon impacts the thermocline depth and consequently affects marine ecosystems in the eastern Pacific Ocean?","answer":"A","hint":"","options":{"A":"The thermocline deepens, reducing nutrient upwelling and leading to decreased primary productivity.","B":"The thermocline becomes shallower, enhancing nutrient upwelling and increasing primary productivity.","C":"The thermocline remains at the same depth, but increased surface temperatures boost metabolic rates in marine organisms.","D":"The thermocline oscillates unpredictably, creating erratic patterns of nutrient distribution and primary productivity.","E":"The thermocline deepens, but increased wind-driven mixing compensates for nutrient loss, maintaining primary productivity levels."},"choices":[],"video_id":"Biology_0","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Based on the oceanic changes depicted in the video, which of the following best explains how the phenomenon impacts the thermocline depth and consequently affects marine ecosystems in the eastern Pacific Ocean?\nA. The thermocline deepens, reducing nutrient upwelling and leading to decreased primary productivity.\nB. The thermocline becomes shallower, enhancing nutrient upwelling and increasing primary productivity.\nC. The thermocline remains at the same depth, but increased surface temperatures boost metabolic rates in marine organisms.\nD. The thermocline oscillates unpredictably, creating erratic patterns of nutrient distribution and primary productivity.\nE. The thermocline deepens, but increased wind-driven mixing compensates for nutrient loss, maintaining primary productivity levels.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_190","media":["validation_190_0.mp4"],"messages":[{"role":"user","question":"In the reflex shown in the video, the cell bodies of the afferent sensory neurons are located in the **______**.","answer":"dorsal root ganglia","hint":"","options":{},"choices":[],"video_id":"Neurobiology_9","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the reflex shown in the video, the cell bodies of the afferent sensory neurons are located in the **______**."}]},{"id":"validation_191","media":["validation_191_0.mp4"],"messages":[{"role":"user","question":"Which part of the central nervous system innervates the reflex in this video?","answer":"C","hint":"","options":{"A":"Basal ganglia","B":"Brain stem","C":"Spinal cord","D":"Thalamus","E":"Cerebellum"},"choices":[],"video_id":"Neurobiology_9","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Which part of the central nervous system innervates the reflex in this video?\nA. Basal ganglia\nB. Brain stem\nC. Spinal cord\nD. Thalamus\nE. Cerebellum\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_192","media":["validation_192_0.mp4"],"messages":[{"role":"user","question":"If the synaptic transmission delay of neural signals through chemical signaling at the synapse is 1 ms, what is the total synaptic delay for the reaction shown in the video?","answer":"B","hint":"","options":{"A":"0 milliseconds","B":"1 milliseconds","C":"2 milliseconds","D":"3 milliseconds","E":"4 milliseconds"},"choices":[],"video_id":"Neurobiology_9","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>If the synaptic transmission delay of neural signals through chemical signaling at the synapse is 1 ms, what is the total synaptic delay for the reaction shown in the video?\nA. 0 milliseconds\nB. 1 milliseconds\nC. 2 milliseconds\nD. 3 milliseconds\nE. 4 milliseconds\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_193","media":["validation_193_0.mp4"],"messages":[{"role":"user","question":"Based on the description in the video, in this type of environment, which technology is primarily used in cellular networks to maintain optimal performance and reduce interference caused by overlapping cells?","answer":"B","hint":"","options":{"A":"Sectorization of Cells","B":"Power Control Mechanism","C":"Implementation of Pico Cells","D":"Carrier Aggregation Techniques","E":"Beamforming Technology"},"choices":[],"video_id":"Electronics_and_Communication_5","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the description in the video, in this type of environment, which technology is primarily used in cellular networks to maintain optimal performance and reduce interference caused by overlapping cells?\nA. Sectorization of Cells\nB. Power Control Mechanism\nC. Implementation of Pico Cells\nD. Carrier Aggregation Techniques\nE. Beamforming Technology\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_194","media":["validation_194_0.mp4"],"messages":[{"role":"user","question":"The middle bulb requires a(n) ________ to operate properly in a DC circuit.","answer":"ballast","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_15","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The middle bulb requires a(n) ________ to operate properly in a DC circuit."}]},{"id":"validation_195","media":["validation_195_0.mp4"],"messages":[{"role":"user","question":"What kind of energy conversion process occurs in the video?","answer":"B","hint":"","options":{"A":"Chemical energy is converted into electrical energy.","B":"Electrical energy is converted into light energy and heat energy.","C":"Light energy is converted into heat and electricity.","D":"Light energy is converted into heat energy.","E":"Light energy is converted into electrical energy."},"choices":[],"video_id":"Electromagnetism_15","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>What kind of energy conversion process occurs in the video?\nA. Chemical energy is converted into electrical energy.\nB. Electrical energy is converted into light energy and heat energy.\nC. Light energy is converted into heat and electricity.\nD. Light energy is converted into heat energy.\nE. Light energy is converted into electrical energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_196","media":["validation_196_0.mp4"],"messages":[{"role":"user","question":"Which bulb has the highest luminous efficacy and is thus the most energy-efficient?","answer":"B","hint":"","options":{"A":"The right bulb has the highest luminous efficacy and is the most energy-efficient.","B":"The left bulb has the highest luminous efficacy and is the most energy-efficient.","C":"The middle bulb has the highest luminous efficacy and is the most energy-efficient.","D":"All bulbs have the same luminous efficacy since they have the same power rating.","E":"The middle bulb emits less light per watt than the right bulb."},"choices":[],"video_id":"Electromagnetism_15","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which bulb has the highest luminous efficacy and is thus the most energy-efficient?\nA. The right bulb has the highest luminous efficacy and is the most energy-efficient.\nB. The left bulb has the highest luminous efficacy and is the most energy-efficient.\nC. The middle bulb has the highest luminous efficacy and is the most energy-efficient.\nD. All bulbs have the same luminous efficacy since they have the same power rating.\nE. The middle bulb emits less light per watt than the right bulb.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_197","media":["validation_197_0.mp4"],"messages":[{"role":"user","question":"In the materials science experiment, a total of two experiments were conducted. The material used in the ______ experiment demonstrated higher strength.","answer":"second","hint":"","options":{},"choices":[],"video_id":"Materials_Science_3","question_type":"open-ended","subject":"Materials Science","prompt":"<video>In the materials science experiment, a total of two experiments were conducted. The material used in the ______ experiment demonstrated higher strength."}]},{"id":"validation_198","media":["validation_198_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the tested solid substance is most likely **______________**.","answer":"sodium","hint":"","options":{},"choices":[],"video_id":"Chemistry_3","question_type":"open-ended","subject":"Chemistry","prompt":"<video>Based on the video, the tested solid substance is most likely **______________**."}]},{"id":"validation_199","media":["validation_199_0.mp4"],"messages":[{"role":"user","question":"Which physical property of the substance is not demonstrated in the video?","answer":"D","hint":"","options":{"A":"conductive","B":"insoluble in oil","C":"silver-white solid","D":"flammable","E":"soft texture"},"choices":[],"video_id":"Chemistry_3","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which physical property of the substance is not demonstrated in the video?\nA. conductive\nB. insoluble in oil\nC. silver-white solid\nD. flammable\nE. soft texture\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_2","media":["validation_2_0.mp4"],"messages":[{"role":"user","question":"What is the algorithm used in the video?","answer":"Depth-First Search (DFS)","hint":"","options":{},"choices":[],"video_id":"Computer_Science_0","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What is the algorithm used in the video?"}]},{"id":"validation_20","media":["validation_20_0.mp4"],"messages":[{"role":"user","question":"The trend illustrated in the video can lead to increased _____ (a city development phenomenon).","answer":"suburbanization","hint":"","options":{},"choices":[],"video_id":"Geography_0","question_type":"open-ended","subject":"Geography","prompt":"<video>The trend illustrated in the video can lead to increased _____ (a city development phenomenon)."}]},{"id":"validation_200","media":["validation_200_0.mp4"],"messages":[{"role":"user","question":"Which metal is most likely being demonstrated in the reactions?","answer":"B","hint":"","options":{"A":"Magnesium","B":"Sodium","C":"Copper","D":"Zinc","E":"Iron"},"choices":[],"video_id":"Chemistry_3","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which metal is most likely being demonstrated in the reactions?\nA. Magnesium\nB. Sodium\nC. Copper\nD. Zinc\nE. Iron\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_201","media":["validation_201_0.mp4"],"messages":[{"role":"user","question":"The physical variable shown in the video depends on which factor? ","answer":"E","hint":"","options":{"A":"Speed","B":"Temperature","C":"Position","D":"Mass","E":"Inertia"},"choices":[],"video_id":"Mechanics_7","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>The physical variable shown in the video depends on which factor? \nA. Speed\nB. Temperature\nC. Position\nD. Mass\nE. Inertia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_202","media":["validation_202_0.mp4"],"messages":[{"role":"user","question":"Why does a magnet fall slower than a ping pong ball?","answer":"D","hint":"","options":{"A":"The density of the table tennis ball is small, and the atmospheric pressure gives the falling object force, so the table tennis ball accelerates more.","B":"There is a magnet underneath the metal tube, which repels the magnet block.","C":"The metal tube has its own magnetic field, and the magnet block is subject to upward magnetic force.","D":"During the movement of the magnet, the metal tube cuts the magnetic field lines to generate an induced magnetic field, and the magnet block experiences upward resistance.","E":"There is a magnet above the metal tube, which attracts each other to the magnet block and prevents the magnet from falling."},"choices":[],"video_id":"Electrical_Engineering_5","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Why does a magnet fall slower than a ping pong ball?\nA. The density of the table tennis ball is small, and the atmospheric pressure gives the falling object force, so the table tennis ball accelerates more.\nB. There is a magnet underneath the metal tube, which repels the magnet block.\nC. The metal tube has its own magnetic field, and the magnet block is subject to upward magnetic force.\nD. During the movement of the magnet, the metal tube cuts the magnetic field lines to generate an induced magnetic field, and the magnet block experiences upward resistance.\nE. There is a magnet above the metal tube, which attracts each other to the magnet block and prevents the magnet from falling.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_203","media":["validation_203_0.mp4"],"messages":[{"role":"user","question":"Based on the circuits shown sequentially in the video, the ____ circuit has a higher main branch current.","answer":"second","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_6","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>Based on the circuits shown sequentially in the video, the ____ circuit has a higher main branch current."}]},{"id":"validation_204","media":["validation_204_0.mp4"],"messages":[{"role":"user","question":"The time complexity of the algorithm visualized in the video is O(n × k), where 'k' represents the number of _______ in the maximum value.","answer":"digits","hint":"","options":{},"choices":[],"video_id":"Computer_Science_8","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The time complexity of the algorithm visualized in the video is O(n × k), where 'k' represents the number of _______ in the maximum value."}]},{"id":"validation_205","media":["validation_205_0.mp4"],"messages":[{"role":"user","question":"What happens to the electrical energy when the light bulb dims?","answer":"C","hint":"","options":{"A":"The total electrical energy consumed increases, and the electrical energy is converted into heat energy and light energy.","B":"The total electrical energy consumed is reduced, and electrical energy is only converted into chemical energy.","C":"The total electrical energy consumed is reduced, and the electrical energy is converted into heat energy and light energy.","D":"The total electrical energy consumed increases and electrical energy is only converted into light energy.","E":"The total electrical energy consumed is reduced, and electrical energy is only converted into light energy."},"choices":[],"video_id":"Electrical_Engineering_7","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What happens to the electrical energy when the light bulb dims?\nA. The total electrical energy consumed increases, and the electrical energy is converted into heat energy and light energy.\nB. The total electrical energy consumed is reduced, and electrical energy is only converted into chemical energy.\nC. The total electrical energy consumed is reduced, and the electrical energy is converted into heat energy and light energy.\nD. The total electrical energy consumed increases and electrical energy is only converted into light energy.\nE. The total electrical energy consumed is reduced, and electrical energy is only converted into light energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_206","media":["validation_206_0.mp4"],"messages":[{"role":"user","question":"which of the following best explains why the light bulb dims most significantly when using the iron rod?","answer":"B","hint":"","options":{"A":"Iron's high electrical resistivity increases the coil's resistance, reducing the current through the bulb.","B":"Iron's high magnetic permeability increases the coil's inductance, raising the inductive reactance and decreasing the circuit's current, thus dimming the bulb.","C":"Iron generates substantial eddy currents that oppose the applied magnetic field, increasing the circuit's impedance and dimming the bulb.","D":"Iron's ferromagnetic properties cause energy losses due to hysteresis, reducing the power available to the bulb.","E":"Iron decreases the coil's inductance by saturating the magnetic core, increasing current and dimming the bulb due to higher power consumption elsewhere."},"choices":[],"video_id":"Electrical_Engineering_7","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>which of the following best explains why the light bulb dims most significantly when using the iron rod?\nA. Iron's high electrical resistivity increases the coil's resistance, reducing the current through the bulb.\nB. Iron's high magnetic permeability increases the coil's inductance, raising the inductive reactance and decreasing the circuit's current, thus dimming the bulb.\nC. Iron generates substantial eddy currents that oppose the applied magnetic field, increasing the circuit's impedance and dimming the bulb.\nD. Iron's ferromagnetic properties cause energy losses due to hysteresis, reducing the power available to the bulb.\nE. Iron decreases the coil's inductance by saturating the magnetic core, increasing current and dimming the bulb due to higher power consumption elsewhere.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_207","media":["validation_207_0.mp4"],"messages":[{"role":"user","question":"According to medical standards, if the patient in the video is suspected of having a spinal injury, the examination method shown is inappropriate. The __________ should be used instead.","answer":"Jaw-thrust maneuver","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_6","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>According to medical standards, if the patient in the video is suspected of having a spinal injury, the examination method shown is inappropriate. The __________ should be used instead."}]},{"id":"validation_208","media":["validation_208_0.mp4"],"messages":[{"role":"user","question":"According to standard auscultation sites, this position in the video corresponds to the **_____** area.","answer":"mitral","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_7","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>According to standard auscultation sites, this position in the video corresponds to the **_____** area."}]},{"id":"validation_209","media":["validation_209_0.mp4"],"messages":[{"role":"user","question":"What is included in the auscultation area in the video?","answer":"E","hint":"","options":{"A":"tricuspid area","B":"Erb's point","C":"aortic area","D":"pulmonary area","E":"mitral area"},"choices":[],"video_id":"Clinical_Medicine_7","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What is included in the auscultation area in the video?\nA. tricuspid area\nB. Erb's point\nC. aortic area\nD. pulmonary area\nE. mitral area\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_21","media":["validation_21_0.mp4"],"messages":[{"role":"user","question":"Imagine what kind of changes would happen if more and more young people in a city chose this way of working?","answer":"B","hint":"","options":{"A":"The rent of office buildings in the city center has risen.","B":"The number of residents in the suburbs of cities has increased.","C":"The pace of life has become faster.","D":"The demand for entertainment facilities in cities is decreasing.","E":"The frequency of urban public transportation is increasing."},"choices":[],"video_id":"Geography_0","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Imagine what kind of changes would happen if more and more young people in a city chose this way of working?\nA. The rent of office buildings in the city center has risen.\nB. The number of residents in the suburbs of cities has increased.\nC. The pace of life has become faster.\nD. The demand for entertainment facilities in cities is decreasing.\nE. The frequency of urban public transportation is increasing.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_210","media":["validation_210_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following diagnostic modalities is the doctor most likely using to evaluate the patient's cardiac function?","answer":"B","hint":"","options":{"A":"Electrocardiography (ECG)","B":"Phonocardiography","C":"Echocardiography (Ultrasound)","D":"Cardiac Magnetic Resonance Imaging (MRI)","E":"Chest Radiography (X-ray)"},"choices":[],"video_id":"Clinical_Medicine_7","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the video description, which of the following diagnostic modalities is the doctor most likely using to evaluate the patient's cardiac function?\nA. Electrocardiography (ECG)\nB. Phonocardiography\nC. Echocardiography (Ultrasound)\nD. Cardiac Magnetic Resonance Imaging (MRI)\nE. Chest Radiography (X-ray)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_211","media":["validation_211_0.mp4"],"messages":[{"role":"user","question":"The doctor uses an electronic stethoscope to graphically display heart sounds and identifies a holosystolic (pansystolic) murmur. The best auscultation area corresponds to the region shown in the video. Which of the following is the most likely cause of this patient’s cardiac findings?","answer":"B","hint":"","options":{"A":"Ventricular septal defect causing left-to-right shunt","B":"Mitral regurgitation due to rheumatic heart disease","C":"Aortic stenosis due to age-related calcific changes","D":"Tricuspid regurgitation secondary to infective endocarditis","E":"Pulmonary stenosis causing right ventricular outflow obstruction"},"choices":[],"video_id":"Clinical_Medicine_7","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>The doctor uses an electronic stethoscope to graphically display heart sounds and identifies a holosystolic (pansystolic) murmur. The best auscultation area corresponds to the region shown in the video. Which of the following is the most likely cause of this patient’s cardiac findings?\nA. Ventricular septal defect causing left-to-right shunt\nB. Mitral regurgitation due to rheumatic heart disease\nC. Aortic stenosis due to age-related calcific changes\nD. Tricuspid regurgitation secondary to infective endocarditis\nE. Pulmonary stenosis causing right ventricular outflow obstruction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_212","media":["validation_212_0.mp4"],"messages":[{"role":"user","question":"In patients with the disease shown in the video, dysfunction of _____ would lead to damage to the body’s functioning.","answer":"cardiac sphincter","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_8","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In patients with the disease shown in the video, dysfunction of _____ would lead to damage to the body’s functioning."}]},{"id":"validation_213","media":["validation_213_0.mp4"],"messages":[{"role":"user","question":"What phenomenon is reflected in the video? ","answer":"D","hint":"","options":{"A":"Earth's revolution","B":"Earth's Atmospheric circulation","C":"Earth's Movement of crustal plates","D":"Earth's rotation","E":"Earth's gravity"},"choices":[],"video_id":"Geography_3","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What phenomenon is reflected in the video? \nA. Earth's revolution\nB. Earth's Atmospheric circulation\nC. Earth's Movement of crustal plates\nD. Earth's rotation\nE. Earth's gravity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_214","media":["validation_214_0.mp4"],"messages":[{"role":"user","question":"What metal is most likely in the video?","answer":"E","hint":"","options":{"A":"Fe","B":"K","C":"Ag","D":"Li","E":"Na"},"choices":[],"video_id":"Chemistry_4","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>What metal is most likely in the video?\nA. Fe\nB. K\nC. Ag\nD. Li\nE. Na\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_215","media":["validation_215_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the chemical processes occurring and correctly identifies the substances involved?","answer":"E","hint":"","options":{"A":"The metal is iron, which reacts slowly with water to produce hydrogen gas; the pink liquid is an acid-base indicator showing acidity due to the formation of iron(III) ions.","B":"The metal is potassium, which reacts vigorously with water to produce potassium hydroxide and oxygen gas; the pink liquid is phenolphthalein indicating the formation of a basic solution.","C":"The metal is silver, which does not react with water; the pink liquid is a dye added to visualize convection currents in the water.","D":"The metal is lithium, which reacts moderately with water to produce lithium hydroxide and hydrogen gas; the pink liquid is phenolphthalein turning pink due to the basic solution formed.","E":"The metal is sodium, which reacts with water to produce sodium hydroxide and hydrogen gas; the pink liquid is phenolphthalein indicating the formation of a basic solution."},"choices":[],"video_id":"Chemistry_4","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which of the following best explains the chemical processes occurring and correctly identifies the substances involved?\nA. The metal is iron, which reacts slowly with water to produce hydrogen gas; the pink liquid is an acid-base indicator showing acidity due to the formation of iron(III) ions.\nB. The metal is potassium, which reacts vigorously with water to produce potassium hydroxide and oxygen gas; the pink liquid is phenolphthalein indicating the formation of a basic solution.\nC. The metal is silver, which does not react with water; the pink liquid is a dye added to visualize convection currents in the water.\nD. The metal is lithium, which reacts moderately with water to produce lithium hydroxide and hydrogen gas; the pink liquid is phenolphthalein turning pink due to the basic solution formed.\nE. The metal is sodium, which reacts with water to produce sodium hydroxide and hydrogen gas; the pink liquid is phenolphthalein indicating the formation of a basic solution.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_216","media":["validation_216_0.mp4"],"messages":[{"role":"user","question":"Which of the following correctly explains the reactions?","answer":"A","hint":"","options":{"A":"Hydrogen gas is evolved; the solution becomes basic due to the formation of sodium hydroxide; the added solution at the end is phenolphthalein, which turns pink in basic solutions.","B":"Oxygen gas is evolved; the solution becomes acidic due to the formation of hydrochloric acid; the added solution at the end is methyl orange, which turns red in acidic solutions.","C":"Carbon dioxide gas is evolved; the solution remains neutral; the added solution at the end is phenolphthalein, which turns pink in basic solutions.","D":"Oxygen gas is evolved; the solution becomes acidic; the added solution is a litmus indicator that turns pink in acidic solutions.","E":"Hydrogen gas is evolved; the solution becomes basic due to the formation of potassium hydroxide; the pink solution is phenolphthalein, which turns pink in acidic solutions."},"choices":[],"video_id":"Chemistry_4","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which of the following correctly explains the reactions?\nA. Hydrogen gas is evolved; the solution becomes basic due to the formation of sodium hydroxide; the added solution at the end is phenolphthalein, which turns pink in basic solutions.\nB. Oxygen gas is evolved; the solution becomes acidic due to the formation of hydrochloric acid; the added solution at the end is methyl orange, which turns red in acidic solutions.\nC. Carbon dioxide gas is evolved; the solution remains neutral; the added solution at the end is phenolphthalein, which turns pink in basic solutions.\nD. Oxygen gas is evolved; the solution becomes acidic; the added solution is a litmus indicator that turns pink in acidic solutions.\nE. Hydrogen gas is evolved; the solution becomes basic due to the formation of potassium hydroxide; the pink solution is phenolphthalein, which turns pink in acidic solutions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_217","media":["validation_217_0.mp4"],"messages":[{"role":"user","question":"How much buoyancy does the weight object experience?","answer":"A","hint":"","options":{"A":"92gm","B":"276gm","C":"112gm","D":"230gm","E":"138gm"},"choices":[],"video_id":"Mechanics_8","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How much buoyancy does the weight object experience?\nA. 92gm\nB. 276gm\nC. 112gm\nD. 230gm\nE. 138gm\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_218","media":["validation_218_0.mp4"],"messages":[{"role":"user","question":"Based on the measurements from the demonstration video, what is the approximate density of the stone in grams per cubic centimeter (g/cm³)?","answer":"C","hint":"","options":{"A":"2.0 g/cm³","B":"2.2 g/cm³","C":"2.5 g/cm³","D":"2.7 g/cm³","E":"3.0 g/cm³"},"choices":[],"video_id":"Mechanics_8","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Based on the measurements from the demonstration video, what is the approximate density of the stone in grams per cubic centimeter (g/cm³)?\nA. 2.0 g/cm³\nB. 2.2 g/cm³\nC. 2.5 g/cm³\nD. 2.7 g/cm³\nE. 3.0 g/cm³\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_219","media":["validation_219_0.mp4"],"messages":[{"role":"user","question":"According to the BCG Matrix, the product in the video would be categorized as a **______**.","answer":"star","hint":"","options":{},"choices":[],"video_id":"Management_3","question_type":"open-ended","subject":"Management","prompt":"<video>According to the BCG Matrix, the product in the video would be categorized as a **______**."}]},{"id":"validation_22","media":["validation_22_0.mp4"],"messages":[{"role":"user","question":"The video demonstrates a famous experiment that proves the existence of the _____.","answer":"blind spot","hint":"","options":{},"choices":[],"video_id":"Neurobiology_0","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The video demonstrates a famous experiment that proves the existence of the _____."}]},{"id":"validation_220","media":["validation_220_0.mp4"],"messages":[{"role":"user","question":"The incident shown in the video illustrates the impact on financial markets and highlights the concept of **_____ risk**.","answer":"political","hint":"","options":{},"choices":[],"video_id":"Economics_3","question_type":"open-ended","subject":"Economics","prompt":"<video>The incident shown in the video illustrates the impact on financial markets and highlights the concept of **_____ risk**."}]},{"id":"validation_221","media":["validation_221_0.mp4"],"messages":[{"role":"user","question":"The horizontal wooden beams shown in the video are called **______**.","answer":"walers","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_3","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>The horizontal wooden beams shown in the video are called **______**."}]},{"id":"validation_222","media":["validation_222_0.mp4"],"messages":[{"role":"user","question":"Which disease could disrupt the action potential conduction way shown in the left neuron in this video?","answer":"A","hint":"","options":{"A":"Multiple sclerosis","B":"Schizophrenia","C":"Amyotrophic lateral sclerosis","D":"Dementia","E":"Stroke"},"choices":[],"video_id":"Neurobiology_10","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Which disease could disrupt the action potential conduction way shown in the left neuron in this video?\nA. Multiple sclerosis\nB. Schizophrenia\nC. Amyotrophic lateral sclerosis\nD. Dementia\nE. Stroke\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_223","media":["validation_223_0.mp4"],"messages":[{"role":"user","question":"Which of the following conditions involves damage to peripheral nerves, leading to impairment of the mechanism described in the video and resulting in worsening muscle weakness?","answer":"B","hint":"","options":{"A":"Multiple sclerosis","B":"Guillain-Barré syndrome","C":"Myasthenia gravis","D":"Lambert-Eaton myasthenic syndrome","E":"Duchenne muscular dystrophy"},"choices":[],"video_id":"Neurobiology_10","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Which of the following conditions involves damage to peripheral nerves, leading to impairment of the mechanism described in the video and resulting in worsening muscle weakness?\nA. Multiple sclerosis\nB. Guillain-Barré syndrome\nC. Myasthenia gravis\nD. Lambert-Eaton myasthenic syndrome\nE. Duchenne muscular dystrophy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_224","media":["validation_224_0.mp4"],"messages":[{"role":"user","question":"The mechanical and chemical processes depicted in the video are primarily stimulated by the ________ branch of the autonomic nervous system.","answer":"parasympathetic","hint":"","options":{},"choices":[],"video_id":"Neurobiology_11","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The mechanical and chemical processes depicted in the video are primarily stimulated by the ________ branch of the autonomic nervous system."}]},{"id":"validation_225","media":["validation_225_0.mp4"],"messages":[{"role":"user","question":"The red line drawn from Salem to Eugene indicates that adding this edge would create a **____**.","answer":"cycle","hint":"","options":{},"choices":[],"video_id":"Computer_Science_9","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The red line drawn from Salem to Eugene indicates that adding this edge would create a **____**."}]},{"id":"validation_226","media":["validation_226_0.mp4"],"messages":[{"role":"user","question":"What is the explanation between the motion of the two objects?","answer":"E","hint":"","options":{"A":"There are electrons in the air between the sphere and the plastic strip, which attract or repel the two uncharged plastic rods and sphere.","B":"Under the influence of gravity, the plastic strips repeatedly vibrate around the spherical shell.","C":"The spherical shell generates a magnetic field, and the plastic rod is affected by magnetic force in the magnetic field.","D":"The plastic strip is charged, but the spherical shell is not. The two attract each other at first, and after contact, they have the same charge and repel each other.","E":"The spherical shell is charged, and the plastic strip is attracted to the spherical shell. When it comes into contact with the spherical shell, it carries the same charge and is repelled."},"choices":[],"video_id":"Electrical_Engineering_8","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What is the explanation between the motion of the two objects?\nA. There are electrons in the air between the sphere and the plastic strip, which attract or repel the two uncharged plastic rods and sphere.\nB. Under the influence of gravity, the plastic strips repeatedly vibrate around the spherical shell.\nC. The spherical shell generates a magnetic field, and the plastic rod is affected by magnetic force in the magnetic field.\nD. The plastic strip is charged, but the spherical shell is not. The two attract each other at first, and after contact, they have the same charge and repel each other.\nE. The spherical shell is charged, and the plastic strip is attracted to the spherical shell. When it comes into contact with the spherical shell, it carries the same charge and is repelled.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_227","media":["validation_227_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following best describes the primary pathophysiological defect leading to the condition depicted?","answer":"E","hint":"","options":{"A":"Autoimmune destruction of pancreatic beta cells resulting in absolute insulin deficiency.","B":"Overproduction of insulin causing downregulation of insulin receptors on peripheral tissues.","C":"Impaired insulin secretion due to pancreatic beta-cell exhaustion without insulin resistance.","D":"Excessive glucose production by the liver due to increased glucagon secretion.","E":"Post-receptor defects in insulin signaling pathways causing insulin resistance in target cells."},"choices":[],"video_id":"Pharmacy_5","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the video, which of the following best describes the primary pathophysiological defect leading to the condition depicted?\nA. Autoimmune destruction of pancreatic beta cells resulting in absolute insulin deficiency.\nB. Overproduction of insulin causing downregulation of insulin receptors on peripheral tissues.\nC. Impaired insulin secretion due to pancreatic beta-cell exhaustion without insulin resistance.\nD. Excessive glucose production by the liver due to increased glucagon secretion.\nE. Post-receptor defects in insulin signaling pathways causing insulin resistance in target cells.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_228","media":["validation_228_0.mp4"],"messages":[{"role":"user","question":"Which of the following preventive interventions is most critical to reduce the risk of a potentially fatal infection?","answer":"A","hint":"","options":{"A":"Administer tetanus immune globulin and initiate the DTaP vaccination series.","B":"Begin the hepatitis B vaccination series immediately.","C":"Provide rabies post-exposure prophylaxis with vaccine and immunoglobulin.","D":"Administer the inactivated poliovirus vaccine to prevent polio infection.","E":"Provide measles, mumps, and rubella (MMR) vaccination promptly."},"choices":[],"video_id":"Preventive_Medicine_3","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following preventive interventions is most critical to reduce the risk of a potentially fatal infection?\nA. Administer tetanus immune globulin and initiate the DTaP vaccination series.\nB. Begin the hepatitis B vaccination series immediately.\nC. Provide rabies post-exposure prophylaxis with vaccine and immunoglobulin.\nD. Administer the inactivated poliovirus vaccine to prevent polio infection.\nE. Provide measles, mumps, and rubella (MMR) vaccination promptly.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_229","media":["validation_229_0.mp4"],"messages":[{"role":"user","question":"Based on the symptoms depicted in the video, the individuals are most likely experiencing the disorder known as ______.","answer":"narcolepsy","hint":"","options":{},"choices":[],"video_id":"Neurobiology_12","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the symptoms depicted in the video, the individuals are most likely experiencing the disorder known as ______."}]},{"id":"validation_23","media":["validation_23_0.mp4"],"messages":[{"role":"user","question":"How does the energy of the pendulum changes after adding a new item in the experiment without consideration of friction?","answer":"D","hint":"","options":{"A":"Larger","B":"Smaller, then larger","C":"Smaller","D":"Keep same","E":"Larger, then smaller"},"choices":[],"video_id":"Mechanics_0","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How does the energy of the pendulum changes after adding a new item in the experiment without consideration of friction?\nA. Larger\nB. Smaller, then larger\nC. Smaller\nD. Keep same\nE. Larger, then smaller\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_230","media":["validation_230_0.mp4"],"messages":[{"role":"user","question":"Based on the office scenario described, the man's behavior could be classified as _________ under workplace law.","answer":"sexual harassment","hint":"","options":{},"choices":[],"video_id":"Management_4","question_type":"open-ended","subject":"Management","prompt":"<video>Based on the office scenario described, the man's behavior could be classified as _________ under workplace law."}]},{"id":"validation_231","media":["validation_231_0.mp4"],"messages":[{"role":"user","question":"What is the worst-case time complexity of the shown algorithm?","answer":"O(n²)","hint":"","options":{},"choices":[],"video_id":"Computer_Science_10","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What is the worst-case time complexity of the shown algorithm?"}]},{"id":"validation_232","media":["validation_232_0.mp4"],"messages":[{"role":"user","question":"What is the worst case time complexity of this algorithm showed in the video?","answer":"C","hint":"","options":{"A":"O(n)","B":"O(logn)","C":"O(n^2)","D":"O(n^3)","E":"O(nlogn)"},"choices":[],"video_id":"Computer_Science_10","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What is the worst case time complexity of this algorithm showed in the video?\nA. O(n)\nB. O(logn)\nC. O(n^2)\nD. O(n^3)\nE. O(nlogn)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_233","media":["validation_233_0.mp4"],"messages":[{"role":"user","question":"Suppose we have a large dataset that is already nearly sorted with only a few elements out of place. We want to choose a sorting algorithm that is: - **Stable** (preserves the relative order of equal elements), - Operates **in-place** without requiring significant additional memory, - Performs better than the demonstrated algorithm on nearly sorted data. Which of the following algorithms would best meet these requirements?","answer":"C","hint":"","options":{"A":"Selection Sort","B":"Shell Sort","C":"Insertion Sort","D":"Heap Sort","E":"Quick Sort"},"choices":[],"video_id":"Computer_Science_10","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Suppose we have a large dataset that is already nearly sorted with only a few elements out of place. We want to choose a sorting algorithm that is: - **Stable** (preserves the relative order of equal elements), - Operates **in-place** without requiring significant additional memory, - Performs better than the demonstrated algorithm on nearly sorted data. Which of the following algorithms would best meet these requirements?\nA. Selection Sort\nB. Shell Sort\nC. Insertion Sort\nD. Heap Sort\nE. Quick Sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_234","media":["validation_234_0.mp4"],"messages":[{"role":"user","question":"After each comparison and potential swap, the entire array is re-rendered on the screen. If rendering the array of n bars takes O(n) time due to the drawing operation for each bar, which of the following best describes the overall time complexity of the visualization process, including both the sorting and rendering times, in terms of n?","answer":"E","hint":"","options":{"A":"O(n)","B":"O(n log n)","C":"O(n^2)","D":"O(n^2 log n)","E":"O(n^3)"},"choices":[],"video_id":"Computer_Science_10","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>After each comparison and potential swap, the entire array is re-rendered on the screen. If rendering the array of n bars takes O(n) time due to the drawing operation for each bar, which of the following best describes the overall time complexity of the visualization process, including both the sorting and rendering times, in terms of n?\nA. O(n)\nB. O(n log n)\nC. O(n^2)\nD. O(n^2 log n)\nE. O(n^3)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_235","media":["validation_235_0.mp4"],"messages":[{"role":"user","question":"The signal measurement of the oscilloscope is directly connected to the two ends of the _______ component.","answer":"pickup","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_16","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The signal measurement of the oscilloscope is directly connected to the two ends of the _______ component."}]},{"id":"validation_236","media":["validation_236_0.mp4"],"messages":[{"role":"user","question":"The algorithm in the video is called **__________**.","answer":"Kruskal's algorithm","hint":"","options":{},"choices":[],"video_id":"Computer_Science_11","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm in the video is called **__________**."}]},{"id":"validation_237","media":["validation_237_0.mp4"],"messages":[{"role":"user","question":"The medication used to treat the symptoms shown in the video works by binding to ___ receptors.","answer":"H1","hint":"","options":{},"choices":[],"video_id":"Pharmacy_6","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>The medication used to treat the symptoms shown in the video works by binding to ___ receptors."}]},{"id":"validation_238","media":["validation_238_0.mp4"],"messages":[{"role":"user","question":"Which of the following medications can relieve the symptoms shown in the video?","answer":"D","hint":"","options":{"A":"Amoxicillin","B":"Metformin","C":"Simvastatin","D":"Diphenhydramine","E":"Ibuprofen"},"choices":[],"video_id":"Pharmacy_6","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following medications can relieve the symptoms shown in the video?\nA. Amoxicillin\nB. Metformin\nC. Simvastatin\nD. Diphenhydramine\nE. Ibuprofen\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_239","media":["validation_239_0.mp4"],"messages":[{"role":"user","question":"Which of the following drugs can be used to treat the disease shown in the video?","answer":"A","hint":"","options":{"A":"Quinidine","B":"Lisinopril","C":"Atenolol","D":"Ciprofloxacin","E":"Aspirin"},"choices":[],"video_id":"Pharmacy_7","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following drugs can be used to treat the disease shown in the video?\nA. Quinidine\nB. Lisinopril\nC. Atenolol\nD. Ciprofloxacin\nE. Aspirin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_24","media":["validation_24_0.mp4"],"messages":[{"role":"user","question":"What could the brown stuff in the video be?","answer":"B","hint":"","options":{"A":"peptidyltransferase","B":"RNA polymerase","C":"DNA polymerase","D":"Topoisomerase","E":"Spliceosome complex"},"choices":[],"video_id":"Clinical_Medicine_0","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What could the brown stuff in the video be?\nA. peptidyltransferase\nB. RNA polymerase\nC. DNA polymerase\nD. Topoisomerase\nE. Spliceosome complex\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_240","media":["validation_240_0.mp4"],"messages":[{"role":"user","question":"The mode of heat transfer demonstrated in the video is __________.","answer":"convection","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_2","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>The mode of heat transfer demonstrated in the video is __________."}]},{"id":"validation_241","media":["validation_241_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements can explain the phenomenon in the video?","answer":"E","hint":"","options":{"A":"The tube on the left has grooves that create larger eddy currents than the tube on the right, and the magnetic field exerts a stronger force on the magnet.","B":"The ball on the right is a magnet but not the one on the left. The ball on the right is subject to magnetic force as resistance.","C":"The ball on the left is a magnet but not the one on the right. The ball on the left is powered by magnetism.","D":"The ball on the left is heavier and less affected by magnetism.","E":"The tube on the left has grooves, which creates smaller eddy currents than the tube on the right, and the magnetic field exerts a weaker force on the magnet."},"choices":[],"video_id":"Electromagnetism_17","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statements can explain the phenomenon in the video?\nA. The tube on the left has grooves that create larger eddy currents than the tube on the right, and the magnetic field exerts a stronger force on the magnet.\nB. The ball on the right is a magnet but not the one on the left. The ball on the right is subject to magnetic force as resistance.\nC. The ball on the left is a magnet but not the one on the right. The ball on the left is powered by magnetism.\nD. The ball on the left is heavier and less affected by magnetism.\nE. The tube on the left has grooves, which creates smaller eddy currents than the tube on the right, and the magnetic field exerts a weaker force on the magnet.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_242","media":["validation_242_0.mp4"],"messages":[{"role":"user","question":"Which of the following devices has a working mode similar to the action in the video?","answer":"E","hint":"","options":{"A":"windmill","B":"electric motor","C":"hydraulic press","D":"steam turbine","E":"jet engines"},"choices":[],"video_id":"Mechanical_Engineering_7","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following devices has a working mode similar to the action in the video?\nA. windmill\nB. electric motor\nC. hydraulic press\nD. steam turbine\nE. jet engines\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_243","media":["validation_243_0.mp4"],"messages":[{"role":"user","question":"What can be beyond this law based on the last few pictures in the video?","answer":"D","hint":"","options":{"A":"To make transistors infinitely smaller","B":"To enhance interconnect bandwidth using photonics","C":"To let computers consume more power","D":"To evolve new paradigms for reliable computation with unreliable units","E":"To perform large-scale of computation locally"},"choices":[],"video_id":"Electronics_and_Communication_6","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>What can be beyond this law based on the last few pictures in the video?\nA. To make transistors infinitely smaller\nB. To enhance interconnect bandwidth using photonics\nC. To let computers consume more power\nD. To evolve new paradigms for reliable computation with unreliable units\nE. To perform large-scale of computation locally\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_244","media":["validation_244_0.mp4"],"messages":[{"role":"user","question":"In the video, the dark filaments represent the visualization of **__________**.","answer":"magnetic field lines","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_18","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the video, the dark filaments represent the visualization of **__________**."}]},{"id":"validation_245","media":["validation_245_0.mp4"],"messages":[{"role":"user","question":"What geophysical concept is demonstrated in the video?","answer":"E","hint":"","options":{"A":"Horizon","B":"Meridian","C":"Equator","D":"Celestial Pole","E":"Ecliptic Plane"},"choices":[],"video_id":"Geography_4","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What geophysical concept is demonstrated in the video?\nA. Horizon\nB. Meridian\nC. Equator\nD. Celestial Pole\nE. Ecliptic Plane\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_246","media":["validation_246_0.mp4"],"messages":[{"role":"user","question":"The viral infection diagnosed in the video was identified through two successive diagnostic methods, and the virus is ___________.","answer":"HIV","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_9","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The viral infection diagnosed in the video was identified through two successive diagnostic methods, and the virus is ___________."}]},{"id":"validation_247","media":["validation_247_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about the experiment in the video is true?","answer":"E","hint":"","options":{"A":"The metal rod has a magnetic field, which affects the amount of current in the circuit.","B":"The metal rod inserted into the solenoid coil generates a magnetic field, which reduces the electromotive force of the power source and causes the current to become smaller.","C":"The metal rod causes the light bulb circuit to generate an induced electromotive force in the opposite direction, reducing the current in the circuit.","D":"The metal rod absorbs some of the electrical energy, leaving less energy available for the bulb to emit light.","E":"The magnetic permeability and inductance change when the metal rod is inserted into the solenoid coil, increasing the circuit's impedance and reducing the current."},"choices":[],"video_id":"Electromagnetism_19","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statements about the experiment in the video is true?\nA. The metal rod has a magnetic field, which affects the amount of current in the circuit.\nB. The metal rod inserted into the solenoid coil generates a magnetic field, which reduces the electromotive force of the power source and causes the current to become smaller.\nC. The metal rod causes the light bulb circuit to generate an induced electromotive force in the opposite direction, reducing the current in the circuit.\nD. The metal rod absorbs some of the electrical energy, leaving less energy available for the bulb to emit light.\nE. The magnetic permeability and inductance change when the metal rod is inserted into the solenoid coil, increasing the circuit's impedance and reducing the current.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_248","media":["validation_248_0.mp4"],"messages":[{"role":"user","question":"Which of the following explanations correctly accounts for the observations in the experiment?","answer":"A","hint":"","options":{"A":"The second rod significantly increases the inductance compared to the first rod, resulting in a lower voltage distribution to the bulb, so the bulb does not light up during the observation time.","B":"The first rod, being a good conductor, allows induced eddy currents that reduce the magnetic field inside the coil, decreasing inductance and allowing the bulb to light up quickly.","C":"The second rod acts as a magnetic insulator, preventing magnetic flux changes in the coil and thereby stopping current flow to the bulb.","D":"The first rod decreases the overall resistance R of the circuit, increasing the current and causing the bulb to light up.","E":"Inserting the first rod enhances the self-inductance of the coil, increasing the induced emf and lighting the bulb."},"choices":[],"video_id":"Electromagnetism_19","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following explanations correctly accounts for the observations in the experiment?\nA. The second rod significantly increases the inductance compared to the first rod, resulting in a lower voltage distribution to the bulb, so the bulb does not light up during the observation time.\nB. The first rod, being a good conductor, allows induced eddy currents that reduce the magnetic field inside the coil, decreasing inductance and allowing the bulb to light up quickly.\nC. The second rod acts as a magnetic insulator, preventing magnetic flux changes in the coil and thereby stopping current flow to the bulb.\nD. The first rod decreases the overall resistance R of the circuit, increasing the current and causing the bulb to light up.\nE. Inserting the first rod enhances the self-inductance of the coil, increasing the induced emf and lighting the bulb.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_249","media":["validation_249_0.mp4"],"messages":[{"role":"user","question":"Which visual state is shown in the visual","answer":"D","hint":"","options":{"A":"Astigmatism","B":"Cataract","C":"Color blindness","D":"Hyperopia","E":"Myopia"},"choices":[],"video_id":"Pharmacy_8","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which visual state is shown in the visual\nA. Astigmatism\nB. Cataract\nC. Color blindness\nD. Hyperopia\nE. Myopia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_25","media":["validation_25_0.mp4"],"messages":[{"role":"user","question":"The algorithm demonstrated in the video is which common algorithm?","answer":"C","hint":"","options":{"A":"Bubble Sort","B":"Merge Sort","C":"Insertion Sort","D":"Selection Sort","E":"Heap Sort"},"choices":[],"video_id":"Computer_Science_2","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>The algorithm demonstrated in the video is which common algorithm?\nA. Bubble Sort\nB. Merge Sort\nC. Insertion Sort\nD. Selection Sort\nE. Heap Sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_250","media":["validation_250_0.mp4"],"messages":[{"role":"user","question":"In the video, the devices represented by the red and blue blocks resemble the apparatus used in the __________ experiment.","answer":"Stern-Gerlach","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_2","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>In the video, the devices represented by the red and blue blocks resemble the apparatus used in the __________ experiment."}]},{"id":"validation_251","media":["validation_251_0.mp4"],"messages":[{"role":"user","question":"What disease does the patient have?","answer":"E","hint":"","options":{"A":"Chronic gastritis","B":"Hiatal hernia","C":"Acute gastritis","D":"Esophageal candidiasis","E":"Barrett Esophagus"},"choices":[],"video_id":"Basic_Medicine_3","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What disease does the patient have?\nA. Chronic gastritis\nB. Hiatal hernia\nC. Acute gastritis\nD. Esophageal candidiasis\nE. Barrett Esophagus\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_252","media":["validation_252_0.mp4"],"messages":[{"role":"user","question":"What measurement features are shown in the video? ","answer":"C","hint":"","options":{"A":"Precision and stability","B":"Linearity and sensitivity","C":"Accuracy and precision","D":"Accuracy and sensitivity","E":"Stability and resolution"},"choices":[],"video_id":"Mechanics_9","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What measurement features are shown in the video? \nA. Precision and stability\nB. Linearity and sensitivity\nC. Accuracy and precision\nD. Accuracy and sensitivity\nE. Stability and resolution\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_253","media":["validation_253_0.mp4"],"messages":[{"role":"user","question":"What physical quantity is the fundamental cause of the phenomenon in the video? ","answer":"A","hint":"","options":{"A":"Inertia","B":"Acceleration","C":"Gravity","D":"Buoyancy","E":"Friction"},"choices":[],"video_id":"Mechanics_10","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What physical quantity is the fundamental cause of the phenomenon in the video? \nA. Inertia\nB. Acceleration\nC. Gravity\nD. Buoyancy\nE. Friction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_254","media":["validation_254_0.mp4"],"messages":[{"role":"user","question":"The robot system shown in the video has **_____** degree(s) of freedom.","answer":"three","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_8","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The robot system shown in the video has **_____** degree(s) of freedom."}]},{"id":"validation_255","media":["validation_255_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the activity takes place in _______ (country).","answer":"Philippines","hint":"","options":{},"choices":[],"video_id":"Geography_5","question_type":"open-ended","subject":"Geography","prompt":"<video>Based on the video, the activity takes place in _______ (country)."}]},{"id":"validation_256","media":["validation_256_0.mp4"],"messages":[{"role":"user","question":"Which aspect of development does this promote most directly?","answer":"D","hint":"","options":{"A":"Concern for economic development","B":"Pay attention to traditional handicrafts","C":"Acceptance of foreign cultures","D":"A sense of belonging to local culture","E":"The yearning for urban life"},"choices":[],"video_id":"Geography_5","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Which aspect of development does this promote most directly?\nA. Concern for economic development\nB. Pay attention to traditional handicrafts\nC. Acceptance of foreign cultures\nD. A sense of belonging to local culture\nE. The yearning for urban life\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_257","media":["validation_257_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following geographical themes is most directly exemplified by this event?","answer":"C","hint":"","options":{"A":"The assimilation of foreign cultural elements into local traditions","B":"The impact of technological advancements on cultural practices","C":"The celebration and preservation of indigenous cultural heritage","D":"The influence of globalization on regional cultural landscapes","E":"The role of internal migration in shaping urban cultural festivals"},"choices":[],"video_id":"Geography_5","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the video, which of the following geographical themes is most directly exemplified by this event?\nA. The assimilation of foreign cultural elements into local traditions\nB. The impact of technological advancements on cultural practices\nC. The celebration and preservation of indigenous cultural heritage\nD. The influence of globalization on regional cultural landscapes\nE. The role of internal migration in shaping urban cultural festivals\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_258","media":["validation_258_0.mp4"],"messages":[{"role":"user","question":"How will the black dot on the paper move if the wood board moves close to the slide?","answer":"A","hint":"","options":{"A":"Move up first, then move down","B":"Move sideways","C":"Move down first, then move up","D":"Keep still","E":"Move down"},"choices":[],"video_id":"Mechanics_11","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How will the black dot on the paper move if the wood board moves close to the slide?\nA. Move up first, then move down\nB. Move sideways\nC. Move down first, then move up\nD. Keep still\nE. Move down\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_259","media":["validation_259_0.mp4"],"messages":[{"role":"user","question":"In the video, the objects secreted by white big round cells are called **__________**.","answer":"Antibodies","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_2","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the objects secreted by white big round cells are called **__________**."}]},{"id":"validation_26","media":["validation_26_0.mp4"],"messages":[{"role":"user","question":"Which law does the motion shown in the video satisfy? ","answer":"E","hint":"","options":{"A":"Ohm's Law","B":"Hooke's Law","C":"Archimedes' Law","D":"Joule's Law","E":"Kepler's Laws"},"choices":[],"video_id":"Astronomy_0","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which law does the motion shown in the video satisfy? \nA. Ohm's Law\nB. Hooke's Law\nC. Archimedes' Law\nD. Joule's Law\nE. Kepler's Laws\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_260","media":["validation_260_0.mp4"],"messages":[{"role":"user","question":"What kind of medical technology is reflected in the video?","answer":"D","hint":"","options":{"A":"Genome Editing","B":"Radiation therapy","C":"Chemotherapy","D":"Active immunization","E":"Stem cell therapy"},"choices":[],"video_id":"Biomedical_Engineering_2","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of medical technology is reflected in the video?\nA. Genome Editing\nB. Radiation therapy\nC. Chemotherapy\nD. Active immunization\nE. Stem cell therapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_261","media":["validation_261_0.mp4"],"messages":[{"role":"user","question":"The algorithm demonstrated in the video is **__________**.","answer":"Prim's algorithm","hint":"","options":{},"choices":[],"video_id":"Computer_Science_12","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm demonstrated in the video is **__________**."}]},{"id":"validation_262","media":["validation_262_0.mp4"],"messages":[{"role":"user","question":"The fingernails and toenails depicted in the animation are related with **_____ phenomenon**.","answer":"Raynaud's phenomenon","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_4","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The fingernails and toenails depicted in the animation are related with **_____ phenomenon**."}]},{"id":"validation_263","media":["validation_263_0.mp4"],"messages":[{"role":"user","question":"Why are the two objects attracted to each other?","answer":"A","hint":"","options":{"A":"The plastic rod becomes charged when rubbed against the cloth, attracting the uncharged aluminum can.","B":"The aluminum can is charged, the plastic rod is uncharged, and they attract each other.","C":"The air is moist, and the water molecules in the air hold the aluminum can and the plastic rod together.","D":"There is water on the plastic rod, and when it comes into contact with the aluminum can, the surface tension of the water connects the two together.","E":"The plastic rod becomes charged when rubbed against the cloth, attracting the oppositely charged aluminum can."},"choices":[],"video_id":"Electrical_Engineering_9","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Why are the two objects attracted to each other?\nA. The plastic rod becomes charged when rubbed against the cloth, attracting the uncharged aluminum can.\nB. The aluminum can is charged, the plastic rod is uncharged, and they attract each other.\nC. The air is moist, and the water molecules in the air hold the aluminum can and the plastic rod together.\nD. There is water on the plastic rod, and when it comes into contact with the aluminum can, the surface tension of the water connects the two together.\nE. The plastic rod becomes charged when rubbed against the cloth, attracting the oppositely charged aluminum can.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_264","media":["validation_264_0.mp4"],"messages":[{"role":"user","question":"To make the phenomenon in the video more noticeable, which of the following actions would be most effective?","answer":"A","hint":"","options":{"A":"Rubbing the straw more vigorously with the tissue.","B":"Replacing the plastic straw with a metal rod.","C":"Wrapping the aluminum can with insulating material.","D":"Grounding the aluminum can.","E":"Using a different material for the straw that has a lower tendency to gain electrons than plastic."},"choices":[],"video_id":"Electrical_Engineering_9","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>To make the phenomenon in the video more noticeable, which of the following actions would be most effective?\nA. Rubbing the straw more vigorously with the tissue.\nB. Replacing the plastic straw with a metal rod.\nC. Wrapping the aluminum can with insulating material.\nD. Grounding the aluminum can.\nE. Using a different material for the straw that has a lower tendency to gain electrons than plastic.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_265","media":["validation_265_0.mp4"],"messages":[{"role":"user","question":"In the video, the utilized multipotent cells are known as **______**.","answer":"Mesenchymal stem cells","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_3","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the utilized multipotent cells are known as **______**."}]},{"id":"validation_266","media":["validation_266_0.mp4"],"messages":[{"role":"user","question":"What is the treatment used in the video?","answer":"A","hint":"","options":{"A":"Bone grafting","B":"Hormone therapy","C":"Chemotherapy","D":"Photodynamic therapy","E":"Radiation therapy"},"choices":[],"video_id":"Biomedical_Engineering_3","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What is the treatment used in the video?\nA. Bone grafting\nB. Hormone therapy\nC. Chemotherapy\nD. Photodynamic therapy\nE. Radiation therapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_267","media":["validation_267_0.mp4"],"messages":[{"role":"user","question":"What energy transformation occurs in the video?","answer":"D","hint":"","options":{"A":"The potential energy of the ball in the magnetic field is completely converted into the kinetic energy of the ball.","B":"The mechanical energy of the ball is converted into the potential energy of the ball in the magnetic field.","C":"The ball's gravitational potential energy is converted into thermal energy.","D":"The potential energy of the ball in the magnetic field is converted into kinetic energy and heat loss of the ball.","E":"The gravitational potential energy of the ball is converted into the potential energy of the ball in the magnetic field."},"choices":[],"video_id":"Electrical_Engineering_10","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What energy transformation occurs in the video?\nA. The potential energy of the ball in the magnetic field is completely converted into the kinetic energy of the ball.\nB. The mechanical energy of the ball is converted into the potential energy of the ball in the magnetic field.\nC. The ball's gravitational potential energy is converted into thermal energy.\nD. The potential energy of the ball in the magnetic field is converted into kinetic energy and heat loss of the ball.\nE. The gravitational potential energy of the ball is converted into the potential energy of the ball in the magnetic field.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_268","media":["validation_268_0.mp4"],"messages":[{"role":"user","question":"In healthy people, what kind of immune cells are activated primarily by the process shown in the video?","answer":"D","hint":"","options":{"A":"NK cell","B":"macrophage","C":"neutrophil","D":"B cell","E":"mast cell"},"choices":[],"video_id":"Basic_Medicine_5","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>In healthy people, what kind of immune cells are activated primarily by the process shown in the video?\nA. NK cell\nB. macrophage\nC. neutrophil\nD. B cell\nE. mast cell\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_269","media":["validation_269_0.mp4"],"messages":[{"role":"user","question":"Based on the video, this technology is known as **__________**.","answer":"Embryo Transfer","hint":"","options":{},"choices":[],"video_id":"Pharmacy_9","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>Based on the video, this technology is known as **__________**."}]},{"id":"validation_27","media":["validation_27_0.mp4"],"messages":[{"role":"user","question":" This substance increases conductivity in the solution. The substance added is **_____**.","answer":"Salt","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_2","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video> This substance increases conductivity in the solution. The substance added is **_____**."}]},{"id":"validation_270","media":["validation_270_0.mp4"],"messages":[{"role":"user","question":"What method does the instructor use to solve this problem in the video?","answer":"simplex method","hint":"","options":{},"choices":[],"video_id":"Computer_Science_13","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What method does the instructor use to solve this problem in the video?"}]},{"id":"validation_271","media":["validation_271_0.mp4"],"messages":[{"role":"user","question":"What trends does the car show in the video? ","answer":"A","hint":"","options":{"A":"Uniformly accelerated motion","B":"Uniformly deceleration motion","C":"Randomly changing acceleration motion","D":"Stand still","E":"Uniform motion"},"choices":[],"video_id":"Mechanics_12","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What trends does the car show in the video? \nA. Uniformly accelerated motion\nB. Uniformly deceleration motion\nC. Randomly changing acceleration motion\nD. Stand still\nE. Uniform motion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_272","media":["validation_272_0.mp4"],"messages":[{"role":"user","question":"The machining process in the video specifically involves **______** the material.","answer":"milling","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_9","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The machining process in the video specifically involves **______** the material."}]},{"id":"validation_273","media":["validation_273_0.mp4"],"messages":[{"role":"user","question":"Which of the following drugs would target the body system shown in the video?","answer":"E","hint":"","options":{"A":"Amoxicillin","B":"Fluoxetine","C":"Lisinopril","D":"Atorvastatin","E":"Albuterol"},"choices":[],"video_id":"Dentistry_0","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which of the following drugs would target the body system shown in the video?\nA. Amoxicillin\nB. Fluoxetine\nC. Lisinopril\nD. Atorvastatin\nE. Albuterol\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_274","media":["validation_274_0.mp4"],"messages":[{"role":"user","question":"What is a major risk factor of the disease shown in the video?","answer":"B","hint":"","options":{"A":"Hyperkalemia","B":"Hyperlipidemia","C":"Hypolipidemia","D":"Non-smoking","E":"Hypoglycemia"},"choices":[],"video_id":"Basic_Medicine_6","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What is a major risk factor of the disease shown in the video?\nA. Hyperkalemia\nB. Hyperlipidemia\nC. Hypolipidemia\nD. Non-smoking\nE. Hypoglycemia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_275","media":["validation_275_0.mp4"],"messages":[{"role":"user","question":"During the insertion of nodes in the video, to balance the tree, a ______ rotation is required.","answer":"left","hint":"","options":{},"choices":[],"video_id":"Computer_Science_14","question_type":"open-ended","subject":"Computer Science","prompt":"<video>During the insertion of nodes in the video, to balance the tree, a ______ rotation is required."}]},{"id":"validation_276","media":["validation_276_0.mp4"],"messages":[{"role":"user","question":"How many left-rotations are there in the video?","answer":"C","hint":"","options":{"A":"6","B":"4","C":"5","D":"3","E":"7"},"choices":[],"video_id":"Computer_Science_14","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>How many left-rotations are there in the video?\nA. 6\nB. 4\nC. 5\nD. 3\nE. 7\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_277","media":["validation_277_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes the properties of the final tree?","answer":"C","hint":"","options":{"A":"The tree has a black height of 3, and there are red right links present.","B":"The tree has a black height of 5, with all red links connecting parent nodes to their right child.","C":"The tree has a black height of 4, and all red links connect parent nodes to their left child (left-leaning).","D":"The tree has a black height of 6, but red links violate the left-leaning property.","E":"The tree has a black height of 7, indicating it is unbalanced."},"choices":[],"video_id":"Computer_Science_14","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements correctly describes the properties of the final tree?\nA. The tree has a black height of 3, and there are red right links present.\nB. The tree has a black height of 5, with all red links connecting parent nodes to their right child.\nC. The tree has a black height of 4, and all red links connect parent nodes to their left child (left-leaning).\nD. The tree has a black height of 6, but red links violate the left-leaning property.\nE. The tree has a black height of 7, indicating it is unbalanced.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_278","media":["validation_278_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements is true regarding the color and structure of the nodes in the final tree?","answer":"A","hint":"","options":{"A":"All internal nodes with exactly one child have that child as a left child connected via a red link.","B":"There exists at least one internal node with exactly one child connected via a black right link.","C":"The tree contains at least one path with two consecutive red links, violating red-black tree properties.","D":"The root node is red, and all other nodes are black.","E":"The tree is unbalanced due to improper rotations during insertion."},"choices":[],"video_id":"Computer_Science_14","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements is true regarding the color and structure of the nodes in the final tree?\nA. All internal nodes with exactly one child have that child as a left child connected via a red link.\nB. There exists at least one internal node with exactly one child connected via a black right link.\nC. The tree contains at least one path with two consecutive red links, violating red-black tree properties.\nD. The root node is red, and all other nodes are black.\nE. The tree is unbalanced due to improper rotations during insertion.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_279","media":["validation_279_0.mp4"],"messages":[{"role":"user","question":"The diameter of the graph is **___**.","answer":"4","hint":"","options":{},"choices":[],"video_id":"Computer_Science_15","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The diameter of the graph is **___**."}]},{"id":"validation_28","media":["validation_28_0.mp4"],"messages":[{"role":"user","question":"Why does the aluminum piece on the left move longer than the aluminum piece in the middle?","answer":"C","hint":"","options":{"A":"The aluminum piece on the left has greater initial power than the aluminum piece in the middle.","B":"The aluminum piece on the left is subject to force in the external magnetic field but the aluminum piece in the middle is unforced.","C":"The aluminum sheet on the left has a small area, and the induced electromotive force is small, so the resistance it receives is small.","D":"The aluminum piece in the middle experiences resistance in the magnetic field, but the aluminum piece on the left does not experience magnetic force.","E":"The structure of the aluminum sheet on the left limits the path of the induced current, resulting in no or much less induced current."},"choices":[],"video_id":"Electromagnetism_3","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why does the aluminum piece on the left move longer than the aluminum piece in the middle?\nA. The aluminum piece on the left has greater initial power than the aluminum piece in the middle.\nB. The aluminum piece on the left is subject to force in the external magnetic field but the aluminum piece in the middle is unforced.\nC. The aluminum sheet on the left has a small area, and the induced electromotive force is small, so the resistance it receives is small.\nD. The aluminum piece in the middle experiences resistance in the magnetic field, but the aluminum piece on the left does not experience magnetic force.\nE. The structure of the aluminum sheet on the left limits the path of the induced current, resulting in no or much less induced current.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_280","media":["validation_280_0.mp4"],"messages":[{"role":"user","question":"What happened to the gas in the bottle?","answer":"E","hint":"","options":{"A":"As the temperature decreases, the number of molecules increases.","B":"As the temperature decreases, the number of molecules decreases.","C":"As the temperature increases, the number of molecules remains unchanged.","D":"As the temperature decreases, the number of molecules remains unchanged.","E":"As the temperature increases, the number of molecules decreases."},"choices":[],"video_id":"Thermodynamics_3","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>What happened to the gas in the bottle?\nA. As the temperature decreases, the number of molecules increases.\nB. As the temperature decreases, the number of molecules decreases.\nC. As the temperature increases, the number of molecules remains unchanged.\nD. As the temperature decreases, the number of molecules remains unchanged.\nE. As the temperature increases, the number of molecules decreases.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_281","media":["validation_281_0.mp4"],"messages":[{"role":"user","question":"Which medication can not be taken when the situation in the video appears?","answer":"D","hint":"","options":{"A":"Sildenafil","B":"Amoxicillin","C":"Lisinopril","D":"Metronidazole","E":"Almotriptan"},"choices":[],"video_id":"Pharmacy_10","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which medication can not be taken when the situation in the video appears?\nA. Sildenafil\nB. Amoxicillin\nC. Lisinopril\nD. Metronidazole\nE. Almotriptan\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_282","media":["validation_282_0.mp4"],"messages":[{"role":"user","question":"Which of the following conditions is the girl in the video most at risk of developing?","answer":"A","hint":"","options":{"A":"Xerostomia due to antidepressant medication use","B":"Dental fluorosis from excessive fluoride intake","C":"Amelogenesis imperfecta caused by genetic factors","D":"Oral candidiasis resulting from immunodeficiency","E":"Gingival enlargement induced by anticonvulsant therapy"},"choices":[],"video_id":"Dentistry_1","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which of the following conditions is the girl in the video most at risk of developing?\nA. Xerostomia due to antidepressant medication use\nB. Dental fluorosis from excessive fluoride intake\nC. Amelogenesis imperfecta caused by genetic factors\nD. Oral candidiasis resulting from immunodeficiency\nE. Gingival enlargement induced by anticonvulsant therapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_283","media":["validation_283_0.mp4"],"messages":[{"role":"user","question":"What kind of properties are reflected in the video?","answer":"D","hint":"","options":{"A":"Melting property","B":"Dissolution property","C":"Thermodynamic characteristics","D":"Extensional-thickening rheological properties","E":"Optical characteristics"},"choices":[],"video_id":"Biomedical_Engineering_4","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of properties are reflected in the video?\nA. Melting property\nB. Dissolution property\nC. Thermodynamic characteristics\nD. Extensional-thickening rheological properties\nE. Optical characteristics\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_284","media":["validation_284_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains this phenomenon, and how is this property relevant in biomedical engineering applications?","answer":"A","hint":"","options":{"A":"The red liquid contains high-molecular-weight polymers that resist flow under extensional stress; this property is useful in bioinks for 3D bioprinting that require structural stability during extrusion.","B":"The red liquid contains low-molecular-weight surfactants that reduce surface tension under stress; this is beneficial for formulations that require easy spreading, such as topical creams.","C":"The red liquid demonstrates Newtonian flow behavior, maintaining constant viscosity under stress; this is important for intravenous fluids to ensure consistent flow rates.","D":"The red liquid shows viscoelastic solid behavior, storing elastic energy; this is important for designing prosthetic materials that mimic soft tissue mechanics.","E":"The red liquid demonstrates thermal thickening, increasing viscosity with temperature; this helps in formulations of thermosensitive drug delivery systems."},"choices":[],"video_id":"Biomedical_Engineering_4","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following best explains this phenomenon, and how is this property relevant in biomedical engineering applications?\nA. The red liquid contains high-molecular-weight polymers that resist flow under extensional stress; this property is useful in bioinks for 3D bioprinting that require structural stability during extrusion.\nB. The red liquid contains low-molecular-weight surfactants that reduce surface tension under stress; this is beneficial for formulations that require easy spreading, such as topical creams.\nC. The red liquid demonstrates Newtonian flow behavior, maintaining constant viscosity under stress; this is important for intravenous fluids to ensure consistent flow rates.\nD. The red liquid shows viscoelastic solid behavior, storing elastic energy; this is important for designing prosthetic materials that mimic soft tissue mechanics.\nE. The red liquid demonstrates thermal thickening, increasing viscosity with temperature; this helps in formulations of thermosensitive drug delivery systems.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_285","media":["validation_285_0.mp4"],"messages":[{"role":"user","question":"Which of the following proteins is related to the demonstrated disease?","answer":"C","hint":"","options":{"A":"Fibrillar Collagen III","B":"Elastin","C":"Fibrillar Collagen I","D":"Fibronectin","E":"Basement Membrane Collagen IV"},"choices":[],"video_id":"Basic_Medicine_7","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following proteins is related to the demonstrated disease?\nA. Fibrillar Collagen III\nB. Elastin\nC. Fibrillar Collagen I\nD. Fibronectin\nE. Basement Membrane Collagen IV\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_286","media":["validation_286_0.mp4"],"messages":[{"role":"user","question":"The disease shown in the chronic infection video increases the risk of which of the following malignancies?","answer":"E","hint":"","options":{"A":"Hepatocellular carcinoma","B":"Pancreatic adenocarcinoma","C":"Colorectal carcinoma","D":"Gastric carcinoma","E":"Cholangiocarcinoma"},"choices":[],"video_id":"Preventive_Medicine_4","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>The disease shown in the chronic infection video increases the risk of which of the following malignancies?\nA. Hepatocellular carcinoma\nB. Pancreatic adenocarcinoma\nC. Colorectal carcinoma\nD. Gastric carcinoma\nE. Cholangiocarcinoma\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_287","media":["validation_287_0.mp4"],"messages":[{"role":"user","question":"In the video, the first processor with over 60,000 transistors to appear is ______.","answer":"Intel 80286","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_7","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>In the video, the first processor with over 60,000 transistors to appear is ______."}]},{"id":"validation_288","media":["validation_288_0.mp4"],"messages":[{"role":"user","question":"Which of the following is true about this law related in this video?","answer":"D","hint":"","options":{"A":"Its primary applications have shifted to other industries","B":"It has only affected hardware development, not software","C":"It's already been outdated and dead","D":"It has greatly promoted the development of communication technology","E":"It will continue to develop as originally envisioned"},"choices":[],"video_id":"Electronics_and_Communication_7","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which of the following is true about this law related in this video?\nA. Its primary applications have shifted to other industries\nB. It has only affected hardware development, not software\nC. It's already been outdated and dead\nD. It has greatly promoted the development of communication technology\nE. It will continue to develop as originally envisioned\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_289","media":["validation_289_0.mp4"],"messages":[{"role":"user","question":"Based on the video, and considering Moore's Law, which of the following statements is most accurate?","answer":"A","hint":"","options":{"A":"The observed transistor counts from 1977 to 1987 align closely with Moore's Law, as the transistor count approximately doubled every two years.","B":"The transistor counts increased at a rate faster than predicted by Moore's Law, doubling approximately every year.","C":"The transistor counts increased at a slower rate than predicted by Moore's Law, doubling approximately every three years.","D":"The transistor counts did not show a consistent trend during 1977 to 1987 and do not align with Moore's Law.","E":"The transistor counts remained relatively constant from 1977 to 1987."},"choices":[],"video_id":"Electronics_and_Communication_7","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the video, and considering Moore's Law, which of the following statements is most accurate?\nA. The observed transistor counts from 1977 to 1987 align closely with Moore's Law, as the transistor count approximately doubled every two years.\nB. The transistor counts increased at a rate faster than predicted by Moore's Law, doubling approximately every year.\nC. The transistor counts increased at a slower rate than predicted by Moore's Law, doubling approximately every three years.\nD. The transistor counts did not show a consistent trend during 1977 to 1987 and do not align with Moore's Law.\nE. The transistor counts remained relatively constant from 1977 to 1987.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_29","media":["validation_29_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements best explains the observed difference in the durations of swinging, and predicts the expected effect if the middle plate were replaced with a plate made of brass?","answer":"E","hint":"","options":{"A":"The middle plate stops sooner because the magnetic field exerts a direct mechanical force opposing its motion; replacing it with brass would cause it to stop even sooner due to increased magnetic interactions.","B":"The middle plate stops sooner due to magnetic hysteresis losses as it moves through the magnetic field; replacing it with brass would cause it to stop later because brass is less susceptible to hysteresis losses.","C":"The middle plate stops sooner due to eddy current damping opposing its motion; replacing it with brass, which has higher electrical resistivity, would cause it to swing shorter because larger eddy currents would be induced, leading to more damping.","D":"The middle plate stops sooner because the magnetic field exerts a direct mechanical force opposing its motion; replacing it with brass would cause it to stop later due to decreased magnetic interactions.","E":"The middle plate stops sooner due to eddy current damping opposing its motion; replacing it with brass, which has higher electrical resistivity, would cause it to swing longer because smaller eddy currents would be induced, leading to less damping."},"choices":[],"video_id":"Electromagnetism_3","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statements best explains the observed difference in the durations of swinging, and predicts the expected effect if the middle plate were replaced with a plate made of brass?\nA. The middle plate stops sooner because the magnetic field exerts a direct mechanical force opposing its motion; replacing it with brass would cause it to stop even sooner due to increased magnetic interactions.\nB. The middle plate stops sooner due to magnetic hysteresis losses as it moves through the magnetic field; replacing it with brass would cause it to stop later because brass is less susceptible to hysteresis losses.\nC. The middle plate stops sooner due to eddy current damping opposing its motion; replacing it with brass, which has higher electrical resistivity, would cause it to swing shorter because larger eddy currents would be induced, leading to more damping.\nD. The middle plate stops sooner because the magnetic field exerts a direct mechanical force opposing its motion; replacing it with brass would cause it to stop later due to decreased magnetic interactions.\nE. The middle plate stops sooner due to eddy current damping opposing its motion; replacing it with brass, which has higher electrical resistivity, would cause it to swing longer because smaller eddy currents would be induced, leading to less damping.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_290","media":["validation_290_0.mp4"],"messages":[{"role":"user","question":"In the structure of the biomolecule depicted in the animation, the loop located at the bottom is referred to as the _____ loop.","answer":"anticodon","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_10","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the structure of the biomolecule depicted in the animation, the loop located at the bottom is referred to as the _____ loop."}]},{"id":"validation_291","media":["validation_291_0.mp4"],"messages":[{"role":"user","question":"In the industrial process demonstrated in the video, the material laid onto the mold is referred to as ______.","answer":"prepregs","hint":"","options":{},"choices":[],"video_id":"Materials_Science_4","question_type":"open-ended","subject":"Materials Science","prompt":"<video>In the industrial process demonstrated in the video, the material laid onto the mold is referred to as ______."}]},{"id":"validation_292","media":["validation_292_0.mp4"],"messages":[{"role":"user","question":"Which of the conditions required for the composite molding process does not include?","answer":"C","hint":"","options":{"A":"Vacuum","B":"Mould","C":"Heat sink","D":"Pressure","E":"Heating"},"choices":[],"video_id":"Materials_Science_4","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Which of the conditions required for the composite molding process does not include?\nA. Vacuum\nB. Mould\nC. Heat sink\nD. Pressure\nE. Heating\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_293","media":["validation_293_0.mp4"],"messages":[{"role":"user","question":"Based on the situation in the video, which of the following environmental hazards poses the most immediate risk and what is the most appropriate intervention?","answer":"C","hint":"","options":{"A":"Groundwater contamination from leachate; install a leachate collection and treatment system.","B":"Methane gas accumulation leading to explosion risks; implement gas extraction and flaring systems.","C":"Air pollution from open burning of waste; prohibit open burning and enhance waste management practices.","D":"Soil erosion due to improper waste piling; stabilize landfill slopes and implement erosion control measures.","E":"Spread of vector-borne diseases from pests; initiate comprehensive pest control programs."},"choices":[],"video_id":"Civil_Engineering_4","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the situation in the video, which of the following environmental hazards poses the most immediate risk and what is the most appropriate intervention?\nA. Groundwater contamination from leachate; install a leachate collection and treatment system.\nB. Methane gas accumulation leading to explosion risks; implement gas extraction and flaring systems.\nC. Air pollution from open burning of waste; prohibit open burning and enhance waste management practices.\nD. Soil erosion due to improper waste piling; stabilize landfill slopes and implement erosion control measures.\nE. Spread of vector-borne diseases from pests; initiate comprehensive pest control programs.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_294","media":["validation_294_0.mp4"],"messages":[{"role":"user","question":"What are the main methods of handling solid waste in the video?","answer":"E","hint":"","options":{"A":"recycling","B":"biodegradation","C":"using chemicals","D":"composting","E":"incineration"},"choices":[],"video_id":"Civil_Engineering_4","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>What are the main methods of handling solid waste in the video?\nA. recycling\nB. biodegradation\nC. using chemicals\nD. composting\nE. incineration\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_295","media":["validation_295_0.mp4"],"messages":[{"role":"user","question":"Based on the video presentation, which of the following long-term environmental risks is the most significant? What are the most appropriate actions to take?","answer":"B","hint":"","options":{"A":"Soil erosion on the slopes; implement erosion control measures and stabilize slopes.","B":"Groundwater contamination from leachate infiltration; design and install a landfill liner and leachate collection system.","C":"Spread of diseases due to pests attracted by waste; initiate comprehensive pest control programs.","D":"Loss of biodiversity in the surrounding hills; develop and implement ecological restoration plans.","E":"Increased risk of landslides; improve compaction practices."},"choices":[],"video_id":"Civil_Engineering_4","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the video presentation, which of the following long-term environmental risks is the most significant? What are the most appropriate actions to take?\nA. Soil erosion on the slopes; implement erosion control measures and stabilize slopes.\nB. Groundwater contamination from leachate infiltration; design and install a landfill liner and leachate collection system.\nC. Spread of diseases due to pests attracted by waste; initiate comprehensive pest control programs.\nD. Loss of biodiversity in the surrounding hills; develop and implement ecological restoration plans.\nE. Increased risk of landslides; improve compaction practices.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_296","media":["validation_296_0.mp4"],"messages":[{"role":"user","question":"Based on the geological activity observed in the video, the accumulated soil can be classified as _____ soil.","answer":"colluvial","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_5","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Based on the geological activity observed in the video, the accumulated soil can be classified as _____ soil."}]},{"id":"validation_297","media":["validation_297_0.mp4"],"messages":[{"role":"user","question":"Which of the following interventions would be best suited to prevent future events such as those shown in the video from occurring in the future?","answer":"C","hint":"","options":{"A":"Installing horizontal drainage systems to reduce groundwater pressure within the slope.","B":"Regrading the slope to a gentler angle by removing material from the upper sections.","C":"Securing the cliff face with rock bolts and covering it with wire mesh to stabilize loose rocks.","D":"Planting deep-rooted vegetation on the cliff face to reinforce the slope with root systems.","E":"Diverting the road away from the cliff by constructing a tunnel through the mountain."},"choices":[],"video_id":"Civil_Engineering_5","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which of the following interventions would be best suited to prevent future events such as those shown in the video from occurring in the future?\nA. Installing horizontal drainage systems to reduce groundwater pressure within the slope.\nB. Regrading the slope to a gentler angle by removing material from the upper sections.\nC. Securing the cliff face with rock bolts and covering it with wire mesh to stabilize loose rocks.\nD. Planting deep-rooted vegetation on the cliff face to reinforce the slope with root systems.\nE. Diverting the road away from the cliff by constructing a tunnel through the mountain.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_298","media":["validation_298_0.mp4"],"messages":[{"role":"user","question":"What is the main reason for the phenomenon in the video?","answer":"E","hint":"","options":{"A":"temperature","B":"water","C":"dynamite","D":"human activity","E":"gravity"},"choices":[],"video_id":"Civil_Engineering_5","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>What is the main reason for the phenomenon in the video?\nA. temperature\nB. water\nC. dynamite\nD. human activity\nE. gravity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_299","media":["validation_299_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most likely geological process that led to the video phenomenon, and what is the most appropriate method of engineering investigation to confirm this process and provide a basis for effective remedial design?","answer":"A","hint":"","options":{"A":"Freeze-thaw weathering causing rock fractures; conduct a geological site investigation including rock mass characterization and discontinuity surveys.","B":"Excess groundwater pressure weakening the slope; install groundwater monitoring wells and perform hydrogeological modeling.","C":"Surface erosion due to rainfall runoff; carry out a hydrological study and implement surface drainage improvements.","D":"Loss of vegetative root reinforcement; analyze soil-vegetation interactions and reestablish vegetation cover.","E":"Anthropogenic activities like construction vibrations; conduct vibration monitoring and regulate nearby construction practices."},"choices":[],"video_id":"Civil_Engineering_5","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which of the following is the most likely geological process that led to the video phenomenon, and what is the most appropriate method of engineering investigation to confirm this process and provide a basis for effective remedial design?\nA. Freeze-thaw weathering causing rock fractures; conduct a geological site investigation including rock mass characterization and discontinuity surveys.\nB. Excess groundwater pressure weakening the slope; install groundwater monitoring wells and perform hydrogeological modeling.\nC. Surface erosion due to rainfall runoff; carry out a hydrological study and implement surface drainage improvements.\nD. Loss of vegetative root reinforcement; analyze soil-vegetation interactions and reestablish vegetation cover.\nE. Anthropogenic activities like construction vibrations; conduct vibration monitoring and regulate nearby construction practices.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_3","media":["validation_3_0.mp4"],"messages":[{"role":"user","question":"Which process is shown in the animation?","answer":"B","hint":"","options":{"A":"Isothermal compression","B":"Adiabatic compression","C":"Isobaric compression","D":"Adiabatic expansion","E":"Isothermal expansion"},"choices":[],"video_id":"Thermodynamics_0","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which process is shown in the animation?\nA. Isothermal compression\nB. Adiabatic compression\nC. Isobaric compression\nD. Adiabatic expansion\nE. Isothermal expansion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_30","media":["validation_30_0.mp4"],"messages":[{"role":"user","question":"In the reflex test shown in the video, the receptors called _____ corpuscles play a crucial role.","answer":"pacinian","hint":"","options":{},"choices":[],"video_id":"Neurobiology_1","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the reflex test shown in the video, the receptors called _____ corpuscles play a crucial role."}]},{"id":"validation_300","media":["validation_300_0.mp4"],"messages":[{"role":"user","question":"In the described gear mechanism, the green gear that directly interacts with both the blue input gear and the red output gear functions as a(n) **______** gear.","answer":"Idler","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_10","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>In the described gear mechanism, the green gear that directly interacts with both the blue input gear and the red output gear functions as a(n) **______** gear."}]},{"id":"validation_301","media":["validation_301_0.mp4"],"messages":[{"role":"user","question":"The video shows which law of light?","answer":"A","hint":"","options":{"A":"Huygen's principle","B":"Malus's law","C":"Doppler effect","D":"Rayleigh scattering","E":"Snell's law"},"choices":[],"video_id":"Modern_Physics_3","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>The video shows which law of light?\nA. Huygen's principle\nB. Malus's law\nC. Doppler effect\nD. Rayleigh scattering\nE. Snell's law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_302","media":["validation_302_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, the chemical process of ______ was used to produce this composite material.","answer":"electroplating","hint":"","options":{},"choices":[],"video_id":"Materials_Science_5","question_type":"open-ended","subject":"Materials Science","prompt":"<video>As shown in the video, the chemical process of ______ was used to produce this composite material."}]},{"id":"validation_303","media":["validation_303_0.mp4"],"messages":[{"role":"user","question":"Which is the correct statement about self-created metal composites?","answer":"C","hint":"","options":{"A":"Troublesome production process","B":"Non-magnetic properties","C":"Heat resistance","D":"Weighs slightly less than a coin","E":"With wovens"},"choices":[],"video_id":"Materials_Science_5","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Which is the correct statement about self-created metal composites?\nA. Troublesome production process\nB. Non-magnetic properties\nC. Heat resistance\nD. Weighs slightly less than a coin\nE. With wovens\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_304","media":["validation_304_0.mp4"],"messages":[{"role":"user","question":"In the video, a lightweight composite object is created by electroforming metal onto a carbon fiber felt structure. Which of the following best explains how the electroforming process contributes to the unique properties of the final composite material?","answer":"D","hint":"","options":{"A":"Electroforming deposits metal atoms into the carbon fiber lattice, creating a new alloy with enhanced magnetic properties.","B":"The process causes the carbon fibers to realign, significantly increasing the thermal insulation of the composite.","C":"Electroforming builds up a thick layer of metal over the carbon fiber, greatly increasing the object's weight and density.","D":"The electroformed metal forms a conductive coating over the lightweight carbon fiber structure, combining electrical conductivity while maintaining a low overall weight.","E":"Electroforming embeds metal particles within the carbon fiber matrix, enhancing the mechanical strength without altering electrical properties."},"choices":[],"video_id":"Materials_Science_5","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>In the video, a lightweight composite object is created by electroforming metal onto a carbon fiber felt structure. Which of the following best explains how the electroforming process contributes to the unique properties of the final composite material?\nA. Electroforming deposits metal atoms into the carbon fiber lattice, creating a new alloy with enhanced magnetic properties.\nB. The process causes the carbon fibers to realign, significantly increasing the thermal insulation of the composite.\nC. Electroforming builds up a thick layer of metal over the carbon fiber, greatly increasing the object's weight and density.\nD. The electroformed metal forms a conductive coating over the lightweight carbon fiber structure, combining electrical conductivity while maintaining a low overall weight.\nE. Electroforming embeds metal particles within the carbon fiber matrix, enhancing the mechanical strength without altering electrical properties.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_305","media":["validation_305_0.mp4"],"messages":[{"role":"user","question":"Based on the content shown in the video, the subject’s response indicates the integrity of cranial nerve II and ______.","answer":"cranial nerve III ","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_11","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the content shown in the video, the subject’s response indicates the integrity of cranial nerve II and ______."}]},{"id":"validation_306","media":["validation_306_0.mp4"],"messages":[{"role":"user","question":"The girl needs to align the forces so they pass through her **_____**.","answer":"center of mass","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_11","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The girl needs to align the forces so they pass through her **_____**."}]},{"id":"validation_307","media":["validation_307_0.mp4"],"messages":[{"role":"user","question":"Based on the pathological changes depicted in the video, this condition is referred to as _______.","answer":"Cirrhosis","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_12","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the pathological changes depicted in the video, this condition is referred to as _______."}]},{"id":"validation_308","media":["validation_308_0.mp4"],"messages":[{"role":"user","question":"What process is shown in the video?","answer":"C","hint":"","options":{"A":"Non-alcoholic fatty liver disease","B":"Viral hepatitis D","C":"Liver cirrhosis","D":"Alcoholic liver disease","E":"Drug-induced liver damage"},"choices":[],"video_id":"Clinical_Medicine_12","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What process is shown in the video?\nA. Non-alcoholic fatty liver disease\nB. Viral hepatitis D\nC. Liver cirrhosis\nD. Alcoholic liver disease\nE. Drug-induced liver damage\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_309","media":["validation_309_0.mp4"],"messages":[{"role":"user","question":"Based on the liver changes demonstrated in the video, along with the accompanying images showing the underlying causes, which condition is most likely the diagnostic result?","answer":"E","hint":"","options":{"A":"Wilson's disease","B":"Viral hepatitis B infection","C":"Alcoholic liver disease","D":"Hemochromatosis","E":"Steatohepatitis due to combined effects of alcohol consumption and metabolic syndrome"},"choices":[],"video_id":"Clinical_Medicine_12","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the liver changes demonstrated in the video, along with the accompanying images showing the underlying causes, which condition is most likely the diagnostic result?\nA. Wilson's disease\nB. Viral hepatitis B infection\nC. Alcoholic liver disease\nD. Hemochromatosis\nE. Steatohepatitis due to combined effects of alcohol consumption and metabolic syndrome\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_31","media":["validation_31_0.mp4"],"messages":[{"role":"user","question":"Which law does the experiment shown in the video satisfy? ","answer":"D","hint":"","options":{"A":"Joule's Law","B":"Hooke's Law","C":"Kepler's Laws","D":"Newton's Laws","E":"Archimedes' Law"},"choices":[],"video_id":"Mechanics_1","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which law does the experiment shown in the video satisfy? \nA. Joule's Law\nB. Hooke's Law\nC. Kepler's Laws\nD. Newton's Laws\nE. Archimedes' Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_310","media":["validation_310_0.mp4"],"messages":[{"role":"user","question":"If the consumption of high-fat foods increases the risk by 1.5 times, alcohol consumption increases the risk by 2 times, and diabetes increases the risk by 3 times, assuming these factors are independent and have a multiplicative relationship, what is the overall increased risk for liver disease development shown in the video?","answer":"D","hint":"","options":{"A":"6 times increased risk","B":"9 times increased risk","C":"4.5 times increased risk","D":"3 times increased risk","E":"2 times increased risk"},"choices":[],"video_id":"Clinical_Medicine_12","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>If the consumption of high-fat foods increases the risk by 1.5 times, alcohol consumption increases the risk by 2 times, and diabetes increases the risk by 3 times, assuming these factors are independent and have a multiplicative relationship, what is the overall increased risk for liver disease development shown in the video?\nA. 6 times increased risk\nB. 9 times increased risk\nC. 4.5 times increased risk\nD. 3 times increased risk\nE. 2 times increased risk\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_311","media":["validation_311_0.mp4"],"messages":[{"role":"user","question":"In the experiment, the slits in one of the plates primarily serve to reduce the formation of ______________.","answer":"eddy currents","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_20","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the experiment, the slits in one of the plates primarily serve to reduce the formation of ______________."}]},{"id":"validation_312","media":["validation_312_0.mp4"],"messages":[{"role":"user","question":"Why is the second movement time of the complete aluminum piece in the middle shorter than the first movement time?","answer":"E","hint":"","options":{"A":"The external electric field around the aluminum sheet is changed during the second movement, which hinders the movement of the aluminum sheet.","B":"In the second experiment, the wind resistance was large and the aluminum sheet experienced greater resistance.","C":"The first movement of the aluminum sheet is assisted by magnets and moves faster.","D":"In the second experiment, the friction above the rope connecting the aluminum sheets was large and the rotation speed was slow.","E":"The second time the experimenter placed a magnet, and the magnetic force hindered the movement of the aluminum piece."},"choices":[],"video_id":"Electromagnetism_20","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why is the second movement time of the complete aluminum piece in the middle shorter than the first movement time?\nA. The external electric field around the aluminum sheet is changed during the second movement, which hinders the movement of the aluminum sheet.\nB. In the second experiment, the wind resistance was large and the aluminum sheet experienced greater resistance.\nC. The first movement of the aluminum sheet is assisted by magnets and moves faster.\nD. In the second experiment, the friction above the rope connecting the aluminum sheets was large and the rotation speed was slow.\nE. The second time the experimenter placed a magnet, and the magnetic force hindered the movement of the aluminum piece.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_313","media":["validation_313_0.mp4"],"messages":[{"role":"user","question":"Based on the video description of two entities, the smaller entity in the video represents a ___ cell.","answer":"naive T","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_8","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>Based on the video description of two entities, the smaller entity in the video represents a ___ cell."}]},{"id":"validation_314","media":["validation_314_0.mp4"],"messages":[{"role":"user","question":"Which of the statements about the experiment in the video is true?","answer":"B","hint":"","options":{"A":"The mass of the last bead is less than the initial bead, and according to the law of conservation of momentum the speed of the last bead is faster.","B":"The potential energy of the bead in the magnet on the track decreases and is converted into kinetic energy to accelerate the bead.","C":"Electromagnetic induction generates a current that accelerates the beads along the track.","D":"Mechanical energy from a spring-loaded mechanism propels the beads forward.","E":"The electrical energy from the external power source is converted into kinetic energy to accelerate the beads."},"choices":[],"video_id":"Electrical_Engineering_11","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the statements about the experiment in the video is true?\nA. The mass of the last bead is less than the initial bead, and according to the law of conservation of momentum the speed of the last bead is faster.\nB. The potential energy of the bead in the magnet on the track decreases and is converted into kinetic energy to accelerate the bead.\nC. Electromagnetic induction generates a current that accelerates the beads along the track.\nD. Mechanical energy from a spring-loaded mechanism propels the beads forward.\nE. The electrical energy from the external power source is converted into kinetic energy to accelerate the beads.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_315","media":["validation_315_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the motion of the ball in the experiment?","answer":"E","hint":"","options":{"A":"Uniform linear motion","B":"Uniform circular motion","C":"Accelerated linear motion","D":"Horizontal projectile motion","E":"Parabolic Motion"},"choices":[],"video_id":"Mechanics_13","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following best explains the motion of the ball in the experiment?\nA. Uniform linear motion\nB. Uniform circular motion\nC. Accelerated linear motion\nD. Horizontal projectile motion\nE. Parabolic Motion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_316","media":["validation_316_0.mp4"],"messages":[{"role":"user","question":"Based on the technology demonstrated in the video, the machine improves power quality by eliminating ______ from the electrical grid.","answer":"harmonics","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_12","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>Based on the technology demonstrated in the video, the machine improves power quality by eliminating ______ from the electrical grid."}]},{"id":"validation_317","media":["validation_317_0.mp4"],"messages":[{"role":"user","question":"Which part of site exploration is shown in the video?","answer":"C","hint":"","options":{"A":"Subsurface exploration in rocks","B":"Geophysical surveys","C":"Sampling in soils","D":"Cone penetration testing","E":"Hydrogeological testing"},"choices":[],"video_id":"Civil_Engineering_6","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which part of site exploration is shown in the video?\nA. Subsurface exploration in rocks\nB. Geophysical surveys\nC. Sampling in soils\nD. Cone penetration testing\nE. Hydrogeological testing\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_318","media":["validation_318_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following best describes the primary purpose of the operation in the field?","answer":"C","hint":"","options":{"A":"Performing a Standard Penetration Test (SPT) to determine soil density","B":"Conducting a cone penetration test (CPT) to assess soil stratification","C":"Collecting soil samples to analyze texture and composition for soil classification","D":"Installing a piezometer to monitor groundwater levels","E":"Performing an infiltration test to evaluate soil permeability"},"choices":[],"video_id":"Civil_Engineering_6","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the video description, which of the following best describes the primary purpose of the operation in the field?\nA. Performing a Standard Penetration Test (SPT) to determine soil density\nB. Conducting a cone penetration test (CPT) to assess soil stratification\nC. Collecting soil samples to analyze texture and composition for soil classification\nD. Installing a piezometer to monitor groundwater levels\nE. Performing an infiltration test to evaluate soil permeability\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_319","media":["validation_319_0.mp4"],"messages":[{"role":"user","question":"Which move motion in the video shows elastic collision?","answer":"D","hint":"","options":{"A":"First one","B":"Second one","C":"Third one","D":"Two of the three","E":"All"},"choices":[],"video_id":"Mechanics_14","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion in the video shows elastic collision?\nA. First one\nB. Second one\nC. Third one\nD. Two of the three\nE. All\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_32","media":["validation_32_0.mp4"],"messages":[{"role":"user","question":"Which excavation method is shown in the video?","answer":"blasting","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_1","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Which excavation method is shown in the video?"}]},{"id":"validation_320","media":["validation_320_0.mp4"],"messages":[{"role":"user","question":"The control system type of the temperature controller is a(n) ________ control system.","answer":"open-loop","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_12","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The control system type of the temperature controller is a(n) ________ control system."}]},{"id":"validation_321","media":["validation_321_0.mp4"],"messages":[{"role":"user","question":"Based on the working principle demonstrated in the video, this type of cooktop is known as a ______ cooktop.","answer":"radiant","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_13","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>Based on the working principle demonstrated in the video, this type of cooktop is known as a ______ cooktop."}]},{"id":"validation_322","media":["validation_322_0.mp4"],"messages":[{"role":"user","question":"The experimental equipment shown in the video is designed to verify the __________ long-distance propagation, which is an important physics experiment.","answer":"electromagnetic waves","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_8","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>The experimental equipment shown in the video is designed to verify the __________ long-distance propagation, which is an important physics experiment."}]},{"id":"validation_323","media":["validation_323_0.mp4"],"messages":[{"role":"user","question":"In the video clips, in which field was digital communication used? ","answer":"B","hint":"","options":{"A":"Radar signal detection","B":"Optical fiber communication","C":"Satellite communication","D":"Navigation positioning","E":"Traffic signal indication"},"choices":[],"video_id":"Electronics_and_Communication_8","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>In the video clips, in which field was digital communication used? \nA. Radar signal detection\nB. Optical fiber communication\nC. Satellite communication\nD. Navigation positioning\nE. Traffic signal indication\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_324","media":["validation_324_0.mp4"],"messages":[{"role":"user","question":"Based on the photos described, which significant historical development in the field of electronics and communication do these images most likely depict?","answer":"B","hint":"","options":{"A":"The installation of early radar systems during World War II","B":"Guglielmo Marconi's transatlantic wireless communication experiments in the early 1900s","C":"The laying of the first transatlantic telegraph cable in the 1850s","D":"The development of microwave relay towers for telephone communication in the 1940s","E":"The deployment of early satellite communication ground stations in the 1960s"},"choices":[],"video_id":"Electronics_and_Communication_8","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the photos described, which significant historical development in the field of electronics and communication do these images most likely depict?\nA. The installation of early radar systems during World War II\nB. Guglielmo Marconi's transatlantic wireless communication experiments in the early 1900s\nC. The laying of the first transatlantic telegraph cable in the 1850s\nD. The development of microwave relay towers for telephone communication in the 1940s\nE. The deployment of early satellite communication ground stations in the 1960s\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_325","media":["validation_325_0.mp4"],"messages":[{"role":"user","question":"Based on the footage shown in the video, which of the following technical principles is crucial to the success of this experiment?","answer":"D","hint":"","options":{"A":"The invention of the vacuum tube (thermionic valve) to amplify radio signals","B":"The utilization of frequency modulation (FM) to reduce signal noise over long distances","C":"The development of quartz crystal oscillators for precise frequency control","D":"The use of long-wavelength radio waves that propagate via ground waves","E":"The application of regenerative receivers to enhance signal detection sensitivity"},"choices":[],"video_id":"Electronics_and_Communication_8","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the footage shown in the video, which of the following technical principles is crucial to the success of this experiment?\nA. The invention of the vacuum tube (thermionic valve) to amplify radio signals\nB. The utilization of frequency modulation (FM) to reduce signal noise over long distances\nC. The development of quartz crystal oscillators for precise frequency control\nD. The use of long-wavelength radio waves that propagate via ground waves\nE. The application of regenerative receivers to enhance signal detection sensitivity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_326","media":["validation_326_0.mp4"],"messages":[{"role":"user","question":"Which of the following technology is NOT needed to realize the scene in the video?","answer":"D","hint":"","options":{"A":"Reprogrammable controller","B":"Precision actuators","C":"Visual recognition","D":"Autonomous navigation system","E":"Advanced sensor fusion"},"choices":[],"video_id":"Mechanical_Engineering_13","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following technology is NOT needed to realize the scene in the video?\nA. Reprogrammable controller\nB. Precision actuators\nC. Visual recognition\nD. Autonomous navigation system\nE. Advanced sensor fusion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_327","media":["validation_327_0.mp4"],"messages":[{"role":"user","question":"Which of the following mechanical engineering design considerations is most critical to enable the arm's motion to complete the task in the video?","answer":"D","hint":"","options":{"A":"Implementation of open-loop control systems for simplicity in design.","B":"Utilization of hydraulic actuators to provide high force output.","C":"Incorporation of hardened steel components to enhance structural durability.","D":"Design of a robotic arm with six degrees of freedom to achieve necessary kinematic flexibility.","E":"Application of lightweight composite materials to reduce mechanical inertia."},"choices":[],"video_id":"Mechanical_Engineering_13","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following mechanical engineering design considerations is most critical to enable the arm's motion to complete the task in the video?\nA. Implementation of open-loop control systems for simplicity in design.\nB. Utilization of hydraulic actuators to provide high force output.\nC. Incorporation of hardened steel components to enhance structural durability.\nD. Design of a robotic arm with six degrees of freedom to achieve necessary kinematic flexibility.\nE. Application of lightweight composite materials to reduce mechanical inertia.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_328","media":["validation_328_0.mp4"],"messages":[{"role":"user","question":"Which of the following advanced mechanical engineering principles is most critical to enable the robotic arm to complete the tasks in the video?","answer":"A","hint":"","options":{"A":"Implementation of compliant control strategies, such as impedance or admittance control, to adjust to contact forces dynamically.","B":"Use of high-stiffness structural materials to eliminate any deformation during operation.","C":"Application of open-loop control systems to simplify control algorithms and reduce computational load.","D":"Incorporation of ultra-precise position sensors to achieve maximum positional accuracy without consideration of force feedback.","E":"Employing fixed pre-programmed motion paths for all tasks to ensure repeatability."},"choices":[],"video_id":"Mechanical_Engineering_13","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following advanced mechanical engineering principles is most critical to enable the robotic arm to complete the tasks in the video?\nA. Implementation of compliant control strategies, such as impedance or admittance control, to adjust to contact forces dynamically.\nB. Use of high-stiffness structural materials to eliminate any deformation during operation.\nC. Application of open-loop control systems to simplify control algorithms and reduce computational load.\nD. Incorporation of ultra-precise position sensors to achieve maximum positional accuracy without consideration of force feedback.\nE. Employing fixed pre-programmed motion paths for all tasks to ensure repeatability.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_329","media":["validation_329_0.mp4"],"messages":[{"role":"user","question":"Which of the following camera techniques is typically used in the video?","answer":"C","hint":"","options":{"A":"Over-the-shoulder shot","B":"Bird's-eye view shot","C":"Close-up shot","D":"Telephoto shot","E":"Wide-angle shot"},"choices":[],"video_id":"Art_2","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following camera techniques is typically used in the video?\nA. Over-the-shoulder shot\nB. Bird's-eye view shot\nC. Close-up shot\nD. Telephoto shot\nE. Wide-angle shot\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_33","media":["validation_33_0.mp4"],"messages":[{"role":"user","question":"Based on the content and techniques of the film, its narrative perspective is ______ perspective.","answer":"third-person","hint":"","options":{},"choices":[],"video_id":"Literature_0","question_type":"open-ended","subject":"Literature","prompt":"<video>Based on the content and techniques of the film, its narrative perspective is ______ perspective."}]},{"id":"validation_330","media":["validation_330_0.mp4"],"messages":[{"role":"user","question":"In the video, spiral galaxies with a central bar structure are designated with the letters __.","answer":"SB","hint":"","options":{},"choices":[],"video_id":"Astronomy_1","question_type":"open-ended","subject":"Astronomy","prompt":"<video>In the video, spiral galaxies with a central bar structure are designated with the letters __."}]},{"id":"validation_331","media":["validation_331_0.mp4"],"messages":[{"role":"user","question":"The total number of degrees of freedom for the robotic arm is **______**.","answer":"six","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_14","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The total number of degrees of freedom for the robotic arm is **______**."}]},{"id":"validation_332","media":["validation_332_0.mp4"],"messages":[{"role":"user","question":"What biotechnology is shown in the video?","answer":"B","hint":"","options":{"A":"Radiation therapy","B":"Nano drug delivery","C":"Genome editing","D":"Cell clearance","E":"Cell engineering"},"choices":[],"video_id":"Biomedical_Engineering_5","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What biotechnology is shown in the video?\nA. Radiation therapy\nB. Nano drug delivery\nC. Genome editing\nD. Cell clearance\nE. Cell engineering\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_333","media":["validation_333_0.mp4"],"messages":[{"role":"user","question":"Which biomedical application is most likely being illustrated in the video?","answer":"E","hint":"","options":{"A":"Gold nanoparticles as carriers for gene therapy, delivering genetic material into cells.","B":"Gold nanoparticles as contrast agents to enhance Magnetic Resonance Imaging (MRI).","C":"Gold nanoparticles facilitating targeted chemotherapy by delivering drugs to tumor cells.","D":"Gold nanoparticles promoting tissue regeneration through angiogenesis.","E":"Gold nanoparticles used in photothermal ablation therapy to destroy tumor cells."},"choices":[],"video_id":"Biomedical_Engineering_5","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which biomedical application is most likely being illustrated in the video?\nA. Gold nanoparticles as carriers for gene therapy, delivering genetic material into cells.\nB. Gold nanoparticles as contrast agents to enhance Magnetic Resonance Imaging (MRI).\nC. Gold nanoparticles facilitating targeted chemotherapy by delivering drugs to tumor cells.\nD. Gold nanoparticles promoting tissue regeneration through angiogenesis.\nE. Gold nanoparticles used in photothermal ablation therapy to destroy tumor cells.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_334","media":["validation_334_0.mp4"],"messages":[{"role":"user","question":"Which of the following biomedical engineering applications is most likely being illustrated?","answer":"E","hint":"","options":{"A":"The particles are used in photothermal therapy to ablate cancer cells upon near-infrared irradiation.","B":"The particles are as carriers for targeted drug delivery in chemotherapy.","C":"The particles are serving as contrast agents in computed tomography (CT) imaging.","D":"The particles are facilitating wound healing by promoting angiogenesis.","E":"The particles are employed in colorimetric biosensors for detecting specific biomolecules."},"choices":[],"video_id":"Biomedical_Engineering_5","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following biomedical engineering applications is most likely being illustrated?\nA. The particles are used in photothermal therapy to ablate cancer cells upon near-infrared irradiation.\nB. The particles are as carriers for targeted drug delivery in chemotherapy.\nC. The particles are serving as contrast agents in computed tomography (CT) imaging.\nD. The particles are facilitating wound healing by promoting angiogenesis.\nE. The particles are employed in colorimetric biosensors for detecting specific biomolecules.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_335","media":["validation_335_0.mp4"],"messages":[{"role":"user","question":"Determine the pathogenesis of the disease based on the video content?","answer":"D","hint":"","options":{"A":"Viral infection causes damage to neuromuscular junction","B":"Mitochondrial dysfunction impairs muscle contraction","C":"Environmental pollutants directly damage nerve cells","D":"Autoimmune disease","E":"Chronic bacterial infection leading to progressive muscle degeneration"},"choices":[],"video_id":"Dentistry_2","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Determine the pathogenesis of the disease based on the video content?\nA. Viral infection causes damage to neuromuscular junction\nB. Mitochondrial dysfunction impairs muscle contraction\nC. Environmental pollutants directly damage nerve cells\nD. Autoimmune disease\nE. Chronic bacterial infection leading to progressive muscle degeneration\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_336","media":["validation_336_0.mp4"],"messages":[{"role":"user","question":"Based on the effects demonstrated in the video, the material most suitable for this process is _____.","answer":"PLA","hint":"","options":{},"choices":[],"video_id":"Materials_Science_6","question_type":"open-ended","subject":"Materials Science","prompt":"<video>Based on the effects demonstrated in the video, the material most suitable for this process is _____."}]},{"id":"validation_337","media":["validation_337_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about videos is correct? ","answer":"A","hint":"","options":{"A":"The shooter's bullets deviate from the bull's eye, but the distance between each other is very close","B":"Most of the shooter's bullets do not hit the target.","C":"The shooter's bullets are concentrated in a corner of the bull's eye","D":"Most of the shooter's bullets are concentrated near the bull's eye","E":"The shooter's bullets all hit the bull's eye"},"choices":[],"video_id":"Mechanics_15","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following statements about videos is correct? \nA. The shooter's bullets deviate from the bull's eye, but the distance between each other is very close\nB. Most of the shooter's bullets do not hit the target.\nC. The shooter's bullets are concentrated in a corner of the bull's eye\nD. Most of the shooter's bullets are concentrated near the bull's eye\nE. The shooter's bullets all hit the bull's eye\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_338","media":["validation_338_0.mp4"],"messages":[{"role":"user","question":"The failure mode in the test is called _________ failure.","answer":"brittle","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_15","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The failure mode in the test is called _________ failure."}]},{"id":"validation_339","media":["validation_339_0.mp4"],"messages":[{"role":"user","question":"Which of the following materials does this workpiece belong to?","answer":"C","hint":"","options":{"A":"None of the above","B":"composite materials","C":"brittle materials","D":"plastic materials","E":"fibrous materials"},"choices":[],"video_id":"Mechanical_Engineering_15","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following materials does this workpiece belong to?\nA. None of the above\nB. composite materials\nC. brittle materials\nD. plastic materials\nE. fibrous materials\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_34","media":["validation_34_0.mp4"],"messages":[{"role":"user","question":"According to the video,what's the narration perspective?","answer":"E","hint":"","options":{"A":"others","B":"omniscient narrator","C":"limited omniscient","D":"second-person","E":"third-person"},"choices":[],"video_id":"Literature_0","question_type":"multiple-choice","subject":"Literature","prompt":"<video>According to the video,what's the narration perspective?\nA. others\nB. omniscient narrator\nC. limited omniscient\nD. second-person\nE. third-person\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_340","media":["validation_340_0.mp4"],"messages":[{"role":"user","question":"Which of the following failure theories best explains the observed failure mode?","answer":"C","hint":"","options":{"A":"Maximum Shear Stress Theory (Tresca Criterion)","B":"Von Mises Yield Criterion","C":"Mohr-Coulomb Failure Criterion","D":"Maximum Principal Strain Theory","E":"Griffith's Fracture Theory"},"choices":[],"video_id":"Mechanical_Engineering_15","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following failure theories best explains the observed failure mode?\nA. Maximum Shear Stress Theory (Tresca Criterion)\nB. Von Mises Yield Criterion\nC. Mohr-Coulomb Failure Criterion\nD. Maximum Principal Strain Theory\nE. Griffith's Fracture Theory\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_341","media":["validation_341_0.mp4"],"messages":[{"role":"user","question":"Which of the following phenomena is most likely contributed to the observed failure mode?","answer":"B","hint":"","options":{"A":"Shear failure due to diagonal shear stresses exceeding the shear strength.","B":"Compressive crushing failure due to compressive stress exceeding the compressive strength.","C":"Buckling failure caused by the slenderness of the cylinder under axial load.","D":"Failure due to stress concentrations at the contact surfaces with the loading plates.","E":"Failure initiated by microcracking at the aggregate-cement matrix interfaces leading to brittle fracture."},"choices":[],"video_id":"Mechanical_Engineering_15","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following phenomena is most likely contributed to the observed failure mode?\nA. Shear failure due to diagonal shear stresses exceeding the shear strength.\nB. Compressive crushing failure due to compressive stress exceeding the compressive strength.\nC. Buckling failure caused by the slenderness of the cylinder under axial load.\nD. Failure due to stress concentrations at the contact surfaces with the loading plates.\nE. Failure initiated by microcracking at the aggregate-cement matrix interfaces leading to brittle fracture.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_342","media":["validation_342_0.mp4"],"messages":[{"role":"user","question":"What kind of weather is the video simulating","answer":"C","hint":"","options":{"A":"flood","B":"monsoon","C":"tornado","D":"tsunami","E":"hurricane"},"choices":[],"video_id":"Geography_6","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What kind of weather is the video simulating\nA. flood\nB. monsoon\nC. tornado\nD. tsunami\nE. hurricane\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_343","media":["validation_343_0.mp4"],"messages":[{"role":"user","question":"In the video, the experimenter constructed a simple electronic component using basic materials. This electronic component is a ____________.","answer":"capacitor","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_14","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the video, the experimenter constructed a simple electronic component using basic materials. This electronic component is a ____________."}]},{"id":"validation_344","media":["validation_344_0.mp4"],"messages":[{"role":"user","question":"In the animation, small, round objects are hormone-containing **_____** .","answer":"microspheres","hint":"","options":{},"choices":[],"video_id":"Pharmacy_0","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>In the animation, small, round objects are hormone-containing **_____** ."}]},{"id":"validation_345","media":["validation_345_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, this biological mechanism is referred to as a ______ mechanism.","answer":"negative feedback","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_13","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>As shown in the video, this biological mechanism is referred to as a ______ mechanism."}]},{"id":"validation_346","media":["validation_346_0.mp4"],"messages":[{"role":"user","question":"Which move motion shows that the area velocities of planets are constants?","answer":"B","hint":"","options":{"A":"First one","B":"Second one","C":"Third one","D":"None","E":"All"},"choices":[],"video_id":"Mechanics_16","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion shows that the area velocities of planets are constants?\nA. First one\nB. Second one\nC. Third one\nD. None\nE. All\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_347","media":["validation_347_0.mp4"],"messages":[{"role":"user","question":"The cognitive science experiment shown in the video is called the ______.","answer":"Morris water maze","hint":"","options":{},"choices":[],"video_id":"Neurobiology_13","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The cognitive science experiment shown in the video is called the ______."}]},{"id":"validation_348","media":["validation_348_0.mp4"],"messages":[{"role":"user","question":" Which of the following is most likely the experiment shown in the video?","answer":"B","hint":"","options":{"A":"Coagulase Test","B":"Germ Tube Test","C":"Sugar Fermentation Test","D":"Kirby-Bauer Test","E":"Blood Smear Test"},"choices":[],"video_id":"Preventive_Medicine_5","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video> Which of the following is most likely the experiment shown in the video?\nA. Coagulase Test\nB. Germ Tube Test\nC. Sugar Fermentation Test\nD. Kirby-Bauer Test\nE. Blood Smear Test\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_349","media":["validation_349_0.mp4"],"messages":[{"role":"user","question":"The video shows that the blue cells achieve the function demonstrated by expressing _____.","answer":"CD47","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_14","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The video shows that the blue cells achieve the function demonstrated by expressing _____."}]},{"id":"validation_35","media":["validation_35_0.mp4"],"messages":[{"role":"user","question":"Which literary movement does the narrative style of the video most closely align with?","answer":"B","hint":"","options":{"A":"Romanticism","B":"Postmodernism","C":"Realism","D":"Naturalism","E":"Symbolism"},"choices":[],"video_id":"Literature_0","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Which literary movement does the narrative style of the video most closely align with?\nA. Romanticism\nB. Postmodernism\nC. Realism\nD. Naturalism\nE. Symbolism\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_350","media":["validation_350_0.mp4"],"messages":[{"role":"user","question":"What process of cancer development occurs in the video","answer":"C","hint":"","options":{"A":"Oncogene activation","B":"Tumor suppressor gene mutation","C":"Tumour immunology","D":"Apoptosis evasion","E":"Invasion and metastasis"},"choices":[],"video_id":"Clinical_Medicine_14","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What process of cancer development occurs in the video\nA. Oncogene activation\nB. Tumor suppressor gene mutation\nC. Tumour immunology\nD. Apoptosis evasion\nE. Invasion and metastasis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_351","media":["validation_351_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following mechanisms best explains how some cancer cells evade the immune system in the video?","answer":"E","hint":"","options":{"A":"Downregulating MHC class I molecules to avoid cytotoxic T cell recognition","B":"Inducing T-cell anergy through lack of costimulatory signals","C":"Rapid proliferation due to oncogene activation overwhelming immune surveillance","D":"Upregulating PD-L1 expression to inhibit T-cell mediated cytotoxicity","E":"Overexpressing 'don't eat me' signals to inhibit phagocytosis by macrophages"},"choices":[],"video_id":"Clinical_Medicine_14","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the video description, which of the following mechanisms best explains how some cancer cells evade the immune system in the video?\nA. Downregulating MHC class I molecules to avoid cytotoxic T cell recognition\nB. Inducing T-cell anergy through lack of costimulatory signals\nC. Rapid proliferation due to oncogene activation overwhelming immune surveillance\nD. Upregulating PD-L1 expression to inhibit T-cell mediated cytotoxicity\nE. Overexpressing 'don't eat me' signals to inhibit phagocytosis by macrophages\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_352","media":["validation_352_0.mp4"],"messages":[{"role":"user","question":"Which of the following Kepler's laws best visualizes the motion in the video?","answer":"A","hint":"","options":{"A":"First","B":"Second","C":"Third","D":"The first and the second","E":"All of the above"},"choices":[],"video_id":"Astronomy_2","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following Kepler's laws best visualizes the motion in the video?\nA. First\nB. Second\nC. Third\nD. The first and the second\nE. All of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_353","media":["validation_353_0.mp4"],"messages":[{"role":"user","question":"The demonstrated new algorithm is an upgraded version of _________ algorithm.","answer":"Merge Sort","hint":"","options":{},"choices":[],"video_id":"Computer_Science_16","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The demonstrated new algorithm is an upgraded version of _________ algorithm."}]},{"id":"validation_354","media":["validation_354_0.mp4"],"messages":[{"role":"user","question":"Among the countries shown in the video, _____ is not a contracting state of the CISG (United Nations Convention on Contracts for the International Sale of Goods).","answer":"Malaysia","hint":"","options":{},"choices":[],"video_id":"Law_4","question_type":"open-ended","subject":"Law","prompt":"<video>Among the countries shown in the video, _____ is not a contracting state of the CISG (United Nations Convention on Contracts for the International Sale of Goods)."}]},{"id":"validation_355","media":["validation_355_0.mp4"],"messages":[{"role":"user","question":"Considering the visuals shown in the video, they suggest a common network issue related to _____.","answer":"network congestion","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_9","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>Considering the visuals shown in the video, they suggest a common network issue related to _____."}]},{"id":"validation_356","media":["validation_356_0.mp4"],"messages":[{"role":"user","question":"What field is this digital communication applied in?","answer":"B","hint":"","options":{"A":"Artificial Intelligence","B":"Internet","C":"Moore's law","D":"Traffic","E":"Wireless"},"choices":[],"video_id":"Electronics_and_Communication_9","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>What field is this digital communication applied in?\nA. Artificial Intelligence\nB. Internet\nC. Moore's law\nD. Traffic\nE. Wireless\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_357","media":["validation_357_0.mp4"],"messages":[{"role":"user","question":"Considering the network issues demonstrated in the video, which network technology or protocol is primarily designed to address this issue and ensure network stability and efficiency?","answer":"E","hint":"","options":{"A":"Implementing User Datagram Protocol (UDP) to minimize overhead","B":"Utilizing Simple Mail Transfer Protocol (SMTP) for efficient email delivery","C":"Employing Transmission Control Protocol (TCP) for connection-oriented communication","D":"Applying Internet Control Message Protocol (ICMP) for network diagnostics","E":"Implementing Quality of Service (QoS) protocols to manage network traffic"},"choices":[],"video_id":"Electronics_and_Communication_9","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Considering the network issues demonstrated in the video, which network technology or protocol is primarily designed to address this issue and ensure network stability and efficiency?\nA. Implementing User Datagram Protocol (UDP) to minimize overhead\nB. Utilizing Simple Mail Transfer Protocol (SMTP) for efficient email delivery\nC. Employing Transmission Control Protocol (TCP) for connection-oriented communication\nD. Applying Internet Control Message Protocol (ICMP) for network diagnostics\nE. Implementing Quality of Service (QoS) protocols to manage network traffic\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_358","media":["validation_358_0.mp4"],"messages":[{"role":"user","question":"The process shown in the video reflects a common __________ method, which plays an important role in network usage in both everyday life and office environments.","answer":"troubleshooting","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_10","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>The process shown in the video reflects a common __________ method, which plays an important role in network usage in both everyday life and office environments."}]},{"id":"validation_359","media":["validation_359_0.mp4"],"messages":[{"role":"user","question":"Which characteristic of digital communication is shown in the video?","answer":"C","hint":"","options":{"A":"Efficiency","B":"Robustness","C":"Optimality","D":"Transparency","E":"Randomness"},"choices":[],"video_id":"Electronics_and_Communication_10","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which characteristic of digital communication is shown in the video?\nA. Efficiency\nB. Robustness\nC. Optimality\nD. Transparency\nE. Randomness\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_36","media":["validation_36_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following literary themes is most prominently represented in the narrative?","answer":"B","hint":"","options":{"A":"The cyclical nature of time and history","B":"The blurring of reality and illusion","C":"The destructive pursuit of power","D":"The inevitable decline of human morality","E":"The redemptive power of love and sacrifice"},"choices":[],"video_id":"Literature_0","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the video description, which of the following literary themes is most prominently represented in the narrative?\nA. The cyclical nature of time and history\nB. The blurring of reality and illusion\nC. The destructive pursuit of power\nD. The inevitable decline of human morality\nE. The redemptive power of love and sacrifice\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_360","media":["validation_360_0.mp4"],"messages":[{"role":"user","question":"Based on the events depicted in the video, which best describes the approach being highlighted for resolving network connectivity problems in the field of Electronics and Communication?","answer":"D","hint":"","options":{"A":"Implementing redundant networks to improve reliability.","B":"Replacing faulty physical components in the network infrastructure.","C":"Applying error correction algorithms to transmission data.","D":"Utilizing systematic troubleshooting methods to diagnose and fix issues.","E":"Encrypting data transmissions to enhance security."},"choices":[],"video_id":"Electronics_and_Communication_10","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the events depicted in the video, which best describes the approach being highlighted for resolving network connectivity problems in the field of Electronics and Communication?\nA. Implementing redundant networks to improve reliability.\nB. Replacing faulty physical components in the network infrastructure.\nC. Applying error correction algorithms to transmission data.\nD. Utilizing systematic troubleshooting methods to diagnose and fix issues.\nE. Encrypting data transmissions to enhance security.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_361","media":["validation_361_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following best exemplifies the comprehensive strategy for resolving network connectivity issues ?","answer":"A","hint":"","options":{"A":"Integrating diagnostics and communication for efficient network problem resolution through collaboration.","B":"Automatically rerouting network traffic through backup systems to maintain connectivity without user intervention.","C":"Implementing advanced encryption protocols to secure data transmission and prevent connectivity breaches.","D":"Utilizing artificial intelligence to predict and fix network issues proactively without human assistance.","E":"Restricting network usage during peak hours to minimize the likelihood of connectivity loss."},"choices":[],"video_id":"Electronics_and_Communication_10","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the video description, which of the following best exemplifies the comprehensive strategy for resolving network connectivity issues ?\nA. Integrating diagnostics and communication for efficient network problem resolution through collaboration.\nB. Automatically rerouting network traffic through backup systems to maintain connectivity without user intervention.\nC. Implementing advanced encryption protocols to secure data transmission and prevent connectivity breaches.\nD. Utilizing artificial intelligence to predict and fix network issues proactively without human assistance.\nE. Restricting network usage during peak hours to minimize the likelihood of connectivity loss.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_362","media":["validation_362_0.mp4"],"messages":[{"role":"user","question":"What weapon attack means is reflected in the video?","answer":"C","hint":"","options":{"A":"Weather weapon","B":"Satellite weapon","C":"Chemical and biological weapons","D":"Nuclear weapon","E":"Cold weapon"},"choices":[],"video_id":"Biomedical_Engineering_6","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What weapon attack means is reflected in the video?\nA. Weather weapon\nB. Satellite weapon\nC. Chemical and biological weapons\nD. Nuclear weapon\nE. Cold weapon\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_363","media":["validation_363_0.mp4"],"messages":[{"role":"user","question":"Which detection method is primarily being demonstrated for identifying contamination from biological or chemical agents on surfaces?","answer":"C","hint":"","options":{"A":"Infrared Spectroscopy","B":"Raman Spectroscopy","C":"Ultraviolet-Induced Fluorescence Detection","D":"Surface Plasmon Resonance Imaging","E":"Polymerase Chain Reaction (PCR)"},"choices":[],"video_id":"Biomedical_Engineering_6","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which detection method is primarily being demonstrated for identifying contamination from biological or chemical agents on surfaces?\nA. Infrared Spectroscopy\nB. Raman Spectroscopy\nC. Ultraviolet-Induced Fluorescence Detection\nD. Surface Plasmon Resonance Imaging\nE. Polymerase Chain Reaction (PCR)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_364","media":["validation_364_0.mp4"],"messages":[{"role":"user","question":"Based on the activities depicted in the video, which of the following agents is most likely being prevented?","answer":"B","hint":"","options":{"A":"Variola virus (Smallpox)","B":"Bacillus anthracis (Anthrax)","C":"Sarin nerve agent","D":"Ebola virus","E":"Clostridium botulinum"},"choices":[],"video_id":"Biomedical_Engineering_6","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Based on the activities depicted in the video, which of the following agents is most likely being prevented?\nA. Variola virus (Smallpox)\nB. Bacillus anthracis (Anthrax)\nC. Sarin nerve agent\nD. Ebola virus\nE. Clostridium botulinum\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_365","media":["validation_365_0.mp4"],"messages":[{"role":"user","question":"Considering environmental loads, the collapse of the bridge in the video was primarily caused by excessive **______**.","answer":"wind","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_7","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Considering environmental loads, the collapse of the bridge in the video was primarily caused by excessive **______**."}]},{"id":"validation_366","media":["validation_366_0.mp4"],"messages":[{"role":"user","question":"Which of the following devices is being demonstrated in the video?","answer":"A","hint":"","options":{"A":"Thaumatrope","B":"Phenakistoscope","C":"Zoetrope","D":"Praxinoscope","E":"Flipbook"},"choices":[],"video_id":"Art_3","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following devices is being demonstrated in the video?\nA. Thaumatrope\nB. Phenakistoscope\nC. Zoetrope\nD. Praxinoscope\nE. Flipbook\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_367","media":["validation_367_0.mp4"],"messages":[{"role":"user","question":"Which of the following inventors built the device first, using the same mechanism shown in the video?","answer":"C","hint":"","options":{"A":"Étienne-Jules Marey","B":"Thomas Edison","C":"Joseph Plateau","D":"Eadweard Muybridge","E":"William George Horner"},"choices":[],"video_id":"Art_3","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following inventors built the device first, using the same mechanism shown in the video?\nA. Étienne-Jules Marey\nB. Thomas Edison\nC. Joseph Plateau\nD. Eadweard Muybridge\nE. William George Horner\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_368","media":["validation_368_0.mp4"],"messages":[{"role":"user","question":"What is the principle mechansim does the experiment illustrate?","answer":"C","hint":"","options":{"A":"Hooke's Law","B":"Newton's First Law of Motion","C":"Newton's Second Law of Motion","D":"Work-Energy Theorem","E":"Law of Conservation of Energy"},"choices":[],"video_id":"Mechanics_17","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What is the principle mechansim does the experiment illustrate?\nA. Hooke's Law\nB. Newton's First Law of Motion\nC. Newton's Second Law of Motion\nD. Work-Energy Theorem\nE. Law of Conservation of Energy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_369","media":["validation_369_0.mp4"],"messages":[{"role":"user","question":"Cells highlighted in yellow and brown in the video are thought to play a role in detecting ________ taste patterns.","answer":"salty","hint":"","options":{},"choices":[],"video_id":"Neurobiology_14","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Cells highlighted in yellow and brown in the video are thought to play a role in detecting ________ taste patterns."}]},{"id":"validation_37","media":["validation_37_0.mp4"],"messages":[{"role":"user","question":"Why do LED bulbs light up?","answer":"C","hint":"","options":{"A":"There is a power source inside the light bulb.","B":"The gravitational potential energy of the bulb is converted into electrical energy making the bulb glow.","C":"There is a magnetic field in the environment, and the light bulb cuts the magnetic field lines to generate an induced electromotive force.","D":"A chemical reaction occurs when the substance in the bulb moves, and the chemical energy is converted into electrical energy to make the bulb shine.","E":"The internal energy of the light bulb is converted into electrical energy to make the light bulb shine."},"choices":[],"video_id":"Electromagnetism_4","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why do LED bulbs light up?\nA. There is a power source inside the light bulb.\nB. The gravitational potential energy of the bulb is converted into electrical energy making the bulb glow.\nC. There is a magnetic field in the environment, and the light bulb cuts the magnetic field lines to generate an induced electromotive force.\nD. A chemical reaction occurs when the substance in the bulb moves, and the chemical energy is converted into electrical energy to make the bulb shine.\nE. The internal energy of the light bulb is converted into electrical energy to make the light bulb shine.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_370","media":["validation_370_0.mp4"],"messages":[{"role":"user","question":"According to Media Richness Theory within the major channels of management communication, the communication depicted in the video shows a communication medium with **______** richness.","answer":"high","hint":"","options":{},"choices":[],"video_id":"Management_5","question_type":"open-ended","subject":"Management","prompt":"<video>According to Media Richness Theory within the major channels of management communication, the communication depicted in the video shows a communication medium with **______** richness."}]},{"id":"validation_371","media":["validation_371_0.mp4"],"messages":[{"role":"user","question":"Based on the symptoms demonstrated in the video, the woman may have a deficiency in the neuropeptide ______.","answer":"orexin","hint":"","options":{},"choices":[],"video_id":"Neurobiology_15","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the symptoms demonstrated in the video, the woman may have a deficiency in the neuropeptide ______."}]},{"id":"validation_372","media":["validation_372_0.mp4"],"messages":[{"role":"user","question":"In the case seen in the video, engineers could install a **______** on the downstream side to prevent it from getting worse.","answer":"filter","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_8","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the case seen in the video, engineers could install a **______** on the downstream side to prevent it from getting worse."}]},{"id":"validation_373","media":["validation_373_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which biomedical engineering strategy is primarily depicted?","answer":"D","hint":"","options":{"A":"Implanting metal-based prosthetic devices to replace failing organs.","B":"Utilizing gene editing techniques to modify organ cells' DNA.","C":"Applying external mechanical devices to support organ function.","D":"Cultivating functional organs by growing cells on biomaterial scaffolds.","E":"Transplanting artificial organs constructed from non-biological materials."},"choices":[],"video_id":"Biomedical_Engineering_7","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Based on the video, which biomedical engineering strategy is primarily depicted?\nA. Implanting metal-based prosthetic devices to replace failing organs.\nB. Utilizing gene editing techniques to modify organ cells' DNA.\nC. Applying external mechanical devices to support organ function.\nD. Cultivating functional organs by growing cells on biomaterial scaffolds.\nE. Transplanting artificial organs constructed from non-biological materials.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_374","media":["validation_374_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following best describes the key process being illustrated?","answer":"E","hint":"","options":{"A":"Transplanting animal organs into human patients (xenotransplantation).","B":"Using gene editing technologies to correct mutations in organ cells.","C":"Employing external mechanical devices to replicate organ functions.","D":"Artificial organs entirely from synthetic, non-biological materials.","E":"Growing organs by seeding stem cells onto biomaterial scaffolds to develop vascularized tissues."},"choices":[],"video_id":"Biomedical_Engineering_7","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Based on the video, which of the following best describes the key process being illustrated?\nA. Transplanting animal organs into human patients (xenotransplantation).\nB. Using gene editing technologies to correct mutations in organ cells.\nC. Employing external mechanical devices to replicate organ functions.\nD. Artificial organs entirely from synthetic, non-biological materials.\nE. Growing organs by seeding stem cells onto biomaterial scaffolds to develop vascularized tissues.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_375","media":["validation_375_0.mp4"],"messages":[{"role":"user","question":"Through the engineering operations shown in the video, the workers are aiming to decrease the amount of ____ of the structure.","answer":"settlement","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_9","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Through the engineering operations shown in the video, the workers are aiming to decrease the amount of ____ of the structure."}]},{"id":"validation_376","media":["validation_376_0.mp4"],"messages":[{"role":"user","question":"what kind of data structure is used in the video?","answer":"A","hint":"","options":{"A":"hash table","B":"binary search tree","C":"red black tree","D":"avl tree","E":"heap"},"choices":[],"video_id":"Computer_Science_17","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>what kind of data structure is used in the video?\nA. hash table\nB. binary search tree\nC. red black tree\nD. avl tree\nE. heap\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_377","media":["validation_377_0.mp4"],"messages":[{"role":"user","question":"Based on the properties of hash functions illustrated in the video, which of the following characteristics is essential for cryptographic hash functions but is not necessarily required for hash functions used in data structures like hash tables?","answer":"A","hint":"","options":{"A":"A. It should be computationally infeasible to reconstruct the original input from the hash output (Pre-image resistance).","B":"B. It should produce a fixed-size output regardless of input size.","C":"D. It should be computationally efficient to compute the hash value.","D":"E. It should uniformly distribute hash outputs for the set of possible inputs.","E":"F. It should be able to handle variable-size inputs."},"choices":[],"video_id":"Computer_Science_17","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Based on the properties of hash functions illustrated in the video, which of the following characteristics is essential for cryptographic hash functions but is not necessarily required for hash functions used in data structures like hash tables?\nA. A. It should be computationally infeasible to reconstruct the original input from the hash output (Pre-image resistance).\nB. B. It should produce a fixed-size output regardless of input size.\nC. D. It should be computationally efficient to compute the hash value.\nD. E. It should uniformly distribute hash outputs for the set of possible inputs.\nE. F. It should be able to handle variable-size inputs.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_378","media":["validation_378_0.mp4"],"messages":[{"role":"user","question":"Based on the concepts illustrated in the video, which of the following properties is essential for the cryptographic function shown in the video to ensure security?","answer":"B","hint":"","options":{"A":"It must be highly efficient to compute hash values quickly for large datasets.","B":"It must be pre-image resistant, making it computationally infeasible to reverse-engineer the original input from the hash value.","C":"It must guarantee that no two different inputs will ever produce the same hash value (collision-free).","D":"It must accept only fixed-size inputs to maintain consistency in hashing.","E":"It must utilize symmetric encryption algorithms to secure the hash values."},"choices":[],"video_id":"Computer_Science_17","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Based on the concepts illustrated in the video, which of the following properties is essential for the cryptographic function shown in the video to ensure security?\nA. It must be highly efficient to compute hash values quickly for large datasets.\nB. It must be pre-image resistant, making it computationally infeasible to reverse-engineer the original input from the hash value.\nC. It must guarantee that no two different inputs will ever produce the same hash value (collision-free).\nD. It must accept only fixed-size inputs to maintain consistency in hashing.\nE. It must utilize symmetric encryption algorithms to secure the hash values.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_379","media":["validation_379_0.mp4"],"messages":[{"role":"user","question":"What kind of len is best fit for the movie showed in the video?","answer":"B","hint":"","options":{"A":"600mm f8","B":"35mm f1.8","C":"35mm f8","D":"200mm f8","E":"300mm f8"},"choices":[],"video_id":"Art_4","question_type":"multiple-choice","subject":"Art","prompt":"<video>What kind of len is best fit for the movie showed in the video?\nA. 600mm f8\nB. 35mm f1.8\nC. 35mm f8\nD. 200mm f8\nE. 300mm f8\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_38","media":["validation_38_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements best describes the phenomena occurring in the conductive sheet?","answer":"E","hint":"","options":{"A":"No electromotive force (EMF) or eddy currents are induced in the conductive sheet because it is stationary relative to the magnetic field.","B":"Eddy currents are induced in the conductive sheet, generating a magnetic field that opposes the increasing external magnetic field, resulting in a repulsive force that pushes the sheet away from the magnetic field source.","C":"Eddy currents are induced in the conductive sheet, and the induced magnetic field aids the increasing external magnetic field, causing an attractive force that pulls the sheet toward the magnetic field source.","D":"Eddy currents are induced in the sheet, but due to symmetry, the induced magnetic fields cancel out, resulting in no net magnetic effect or mechanical force on the sheet.","E":"Eddy currents are induced in the sheet, generating a magnetic field opposing the change in the external field, but since the sheet is held stationary, no related mechanical movement occurs despite the presence of induced forces."},"choices":[],"video_id":"Electromagnetism_4","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statements best describes the phenomena occurring in the conductive sheet?\nA. No electromotive force (EMF) or eddy currents are induced in the conductive sheet because it is stationary relative to the magnetic field.\nB. Eddy currents are induced in the conductive sheet, generating a magnetic field that opposes the increasing external magnetic field, resulting in a repulsive force that pushes the sheet away from the magnetic field source.\nC. Eddy currents are induced in the conductive sheet, and the induced magnetic field aids the increasing external magnetic field, causing an attractive force that pulls the sheet toward the magnetic field source.\nD. Eddy currents are induced in the sheet, but due to symmetry, the induced magnetic fields cancel out, resulting in no net magnetic effect or mechanical force on the sheet.\nE. Eddy currents are induced in the sheet, generating a magnetic field opposing the change in the external field, but since the sheet is held stationary, no related mechanical movement occurs despite the presence of induced forces.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_380","media":["validation_380_0.mp4"],"messages":[{"role":"user","question":"Which cinematographic technique is most likely being employed in the scene to create a distinctive visual style?","answer":"B","hint":"","options":{"A":"Use of handheld camera to create a documentary feel","B":"Employment of symmetrical composition and centered framing","C":"Application of slow-motion sequences to emphasize action","D":"Use of Dutch angles to convey psychological tension","E":"Incorporation of rapid montage editing to heighten urgency"},"choices":[],"video_id":"Art_4","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which cinematographic technique is most likely being employed in the scene to create a distinctive visual style?\nA. Use of handheld camera to create a documentary feel\nB. Employment of symmetrical composition and centered framing\nC. Application of slow-motion sequences to emphasize action\nD. Use of Dutch angles to convey psychological tension\nE. Incorporation of rapid montage editing to heighten urgency\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_381","media":["validation_381_0.mp4"],"messages":[{"role":"user","question":"Which art movement is most reflected in the set design and visual style of the scene?","answer":"B","hint":"","options":{"A":"Minimalism","B":"Art Deco","C":"Baroque","D":"Pop Art","E":"Impressionism"},"choices":[],"video_id":"Art_4","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which art movement is most reflected in the set design and visual style of the scene?\nA. Minimalism\nB. Art Deco\nC. Baroque\nD. Pop Art\nE. Impressionism\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_382","media":["validation_382_0.mp4"],"messages":[{"role":"user","question":"What type of energy is being collected by the machine in the video?","answer":"D","hint":"","options":{"A":"energy from wind turbines","B":"energy from geothermal sources","C":"energy from biomass","D":"energy from ocean waves","E":"energy from tidal movements"},"choices":[],"video_id":"Mechanical_Engineering_16","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>What type of energy is being collected by the machine in the video?\nA. energy from wind turbines\nB. energy from geothermal sources\nC. energy from biomass\nD. energy from ocean waves\nE. energy from tidal movements\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_383","media":["validation_383_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements is correct?","answer":"C","hint":"","options":{"A":"The average density of the device is greater than seawater, so it will sink.","B":"The average density of the device is equal to seawater, so it will be neutrally buoyant.","C":"The average density of the device is less than seawater, so it will float.","D":"The device needs additional buoyancy to prevent sinking.","E":"The device's buoyancy depends on wave conditions."},"choices":[],"video_id":"Mechanical_Engineering_16","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following statements is correct?\nA. The average density of the device is greater than seawater, so it will sink.\nB. The average density of the device is equal to seawater, so it will be neutrally buoyant.\nC. The average density of the device is less than seawater, so it will float.\nD. The device needs additional buoyancy to prevent sinking.\nE. The device's buoyancy depends on wave conditions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_384","media":["validation_384_0.mp4"],"messages":[{"role":"user","question":"Which factor most significantly influences the maximum theoretical power output of the device?","answer":"E","hint":"","options":{"A":"The salinity of the seawater where the device is installed.","B":"The material density of the cylinders composing the device.","C":"The surface area of the cylinders in contact with water.","D":"The depth of the water where the device is moored.","E":"The wave height (amplitude) at the deployment location."},"choices":[],"video_id":"Mechanical_Engineering_16","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which factor most significantly influences the maximum theoretical power output of the device?\nA. The salinity of the seawater where the device is installed.\nB. The material density of the cylinders composing the device.\nC. The surface area of the cylinders in contact with water.\nD. The depth of the water where the device is moored.\nE. The wave height (amplitude) at the deployment location.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_385","media":["validation_385_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the pathogen of this disease?","answer":"B","hint":"","options":{"A":"Bacillus anthracis","B":"Clostridium tetani","C":"Clostridium perfringens","D":"Clostridium difficile","E":"Clostridium septicum"},"choices":[],"video_id":"Preventive_Medicine_6","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following is the pathogen of this disease?\nA. Bacillus anthracis\nB. Clostridium tetani\nC. Clostridium perfringens\nD. Clostridium difficile\nE. Clostridium septicum\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_386","media":["validation_386_0.mp4"],"messages":[{"role":"user","question":"The optical phenomenon observed by the oil in the video is caused by changes in the film's __________.","answer":"thickness","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_4","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>The optical phenomenon observed by the oil in the video is caused by changes in the film's __________."}]},{"id":"validation_387","media":["validation_387_0.mp4"],"messages":[{"role":"user","question":"What kind of phenomenon is showed in the video?","answer":"B","hint":"","options":{"A":"tornado","B":"tsunami","C":"hurricane","D":"wildfire","E":"flood"},"choices":[],"video_id":"Geography_7","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What kind of phenomenon is showed in the video?\nA. tornado\nB. tsunami\nC. hurricane\nD. wildfire\nE. flood\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_388","media":["validation_388_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following best explains the geological event depicted and correctly identifies the tectonic plates involved?","answer":"C","hint":"","options":{"A":"A volcanic eruption resulting from the African Plate diverging from the South American Plate along the Mid-Atlantic Ridge.","B":"A deep-sea earthquake caused by the Pacific Plate subducting beneath the North American Plate along the Aleutian Trench.","C":"A megathrust earthquake due to the Indo-Australian Plate subducting beneath the Eurasian Plate along the Sunda Trench.","D":"A collision between the Indian Plate and the Eurasian Plate forming the Himalayan Mountains.","E":"An oceanic earthquake caused by the Antarctic Plate moving northward colliding with the South American Plate."},"choices":[],"video_id":"Geography_7","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the video description, which of the following best explains the geological event depicted and correctly identifies the tectonic plates involved?\nA. A volcanic eruption resulting from the African Plate diverging from the South American Plate along the Mid-Atlantic Ridge.\nB. A deep-sea earthquake caused by the Pacific Plate subducting beneath the North American Plate along the Aleutian Trench.\nC. A megathrust earthquake due to the Indo-Australian Plate subducting beneath the Eurasian Plate along the Sunda Trench.\nD. A collision between the Indian Plate and the Eurasian Plate forming the Himalayan Mountains.\nE. An oceanic earthquake caused by the Antarctic Plate moving northward colliding with the South American Plate.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_389","media":["validation_389_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following locations would have first experienced the tsunami waves after they emerged?","answer":"B","hint":"","options":{"A":"Coastal regions of Mozambique","B":"The Andaman and Nicobar Islands","C":"The eastern coast of Madagascar","D":"The western coast of Australia","E":"The eastern coast of Sri Lanka"},"choices":[],"video_id":"Geography_7","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the video description, which of the following locations would have first experienced the tsunami waves after they emerged?\nA. Coastal regions of Mozambique\nB. The Andaman and Nicobar Islands\nC. The eastern coast of Madagascar\nD. The western coast of Australia\nE. The eastern coast of Sri Lanka\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_39","media":["validation_39_0.mp4"],"messages":[{"role":"user","question":"Which step of the chest examination is not shown in the video?","answer":"E","hint":"","options":{"A":"Palpation","B":"Percussion","C":"Inspection","D":"Auscultation","E":"Both B and D"},"choices":[],"video_id":"Clinical_Medicine_1","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Which step of the chest examination is not shown in the video?\nA. Palpation\nB. Percussion\nC. Inspection\nD. Auscultation\nE. Both B and D\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_390","media":["validation_390_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements explains the motion of the aluminum sheet in the video?","answer":"B","hint":"","options":{"A":"The aluminum sheet generates induced electromotive force in the changing magnetic field, it moves downward due to magnetic force and continues to fall back due to gravity.","B":"The aluminum sheet generates induced electromotive force in the changing magnetic field, it moves upward due to magnetic force and falls back due to gravity.","C":"The aluminum sheet is connected to an external power source to generate current, and is subject to magnetic force in the magnetic field to produce movement.","D":"There is a magnetic field inside the aluminum sheet, which is repulsed by other magnetic fields and moves upward.","E":"There is a magnetic field inside the aluminum sheet, which is attracted by other magnetic fields and moves upward."},"choices":[],"video_id":"Electrical_Engineering_15","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following statements explains the motion of the aluminum sheet in the video?\nA. The aluminum sheet generates induced electromotive force in the changing magnetic field, it moves downward due to magnetic force and continues to fall back due to gravity.\nB. The aluminum sheet generates induced electromotive force in the changing magnetic field, it moves upward due to magnetic force and falls back due to gravity.\nC. The aluminum sheet is connected to an external power source to generate current, and is subject to magnetic force in the magnetic field to produce movement.\nD. There is a magnetic field inside the aluminum sheet, which is repulsed by other magnetic fields and moves upward.\nE. There is a magnetic field inside the aluminum sheet, which is attracted by other magnetic fields and moves upward.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_391","media":["validation_391_0.mp4"],"messages":[{"role":"user","question":"Given the following materials for the ring replacements, which of the following statements is true?","answer":"D","hint":"","options":{"A":"Copper ring - Because copper's high electrical conductivity generates excessive eddy currents that destabilize levitation.","B":"Iron ring - Because the iron becomes magnetized and is attracted to the coil, preventing levitation.","C":"Silver ring - Because silver's thermal properties interfere with the induced magnetic fields needed for levitation.","D":"Stainless steel ring - Because stainless steel's poor electrical conductivity reduces induced eddy currents, insufficient to produce levitation.","E":"Aluminum ring cooled to low temperatures - Because decreased resistance enhances eddy currents excessively, counteracting levitation."},"choices":[],"video_id":"Electrical_Engineering_15","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Given the following materials for the ring replacements, which of the following statements is true?\nA. Copper ring - Because copper's high electrical conductivity generates excessive eddy currents that destabilize levitation.\nB. Iron ring - Because the iron becomes magnetized and is attracted to the coil, preventing levitation.\nC. Silver ring - Because silver's thermal properties interfere with the induced magnetic fields needed for levitation.\nD. Stainless steel ring - Because stainless steel's poor electrical conductivity reduces induced eddy currents, insufficient to produce levitation.\nE. Aluminum ring cooled to low temperatures - Because decreased resistance enhances eddy currents excessively, counteracting levitation.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_392","media":["validation_392_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the increased susceptibility to periodontitis in patients with the disease shown in the video?","answer":"A","hint":"","options":{"A":"Inflammasome activation increases pro-inflammatory cytokines, worsening periodontal inflammation.","B":"Hyperglycemia enhances oral bacterial proliferation, directly causing periodontal tissue destruction.","C":"Insulin resistance reduces collagen synthesis, weakening periodontal support structures.","D":"Oxidative stress from free radical accumulation in beta cells results in gingival tissue damage.","E":"Sentinel proteins suppress immune cell function, leading to increased periodontal infections."},"choices":[],"video_id":"Dentistry_3","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which of the following best explains the increased susceptibility to periodontitis in patients with the disease shown in the video?\nA. Inflammasome activation increases pro-inflammatory cytokines, worsening periodontal inflammation.\nB. Hyperglycemia enhances oral bacterial proliferation, directly causing periodontal tissue destruction.\nC. Insulin resistance reduces collagen synthesis, weakening periodontal support structures.\nD. Oxidative stress from free radical accumulation in beta cells results in gingival tissue damage.\nE. Sentinel proteins suppress immune cell function, leading to increased periodontal infections.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_393","media":["validation_393_0.mp4"],"messages":[{"role":"user","question":"Based on the disease described in the video and its most common oral manifestation, which of the following treatment methods is the most effective?","answer":"E","hint":"","options":{"A":"Prescribing systemic antibiotics to eliminate periodontal pathogens.","B":"Utilizing non-steroidal anti-inflammatory drugs (NSAIDs) to reduce prostaglandin-mediated inflammation.","C":"Administering antioxidants to neutralize free radicals in periodontal tissues.","D":"Enhancing insulin sensitivity using thiazolidinediones to improve glycemic control.","E":"Inhibiting NLRP3 inflammasome activation to decrease production of pro-inflammatory cytokines."},"choices":[],"video_id":"Dentistry_3","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Based on the disease described in the video and its most common oral manifestation, which of the following treatment methods is the most effective?\nA. Prescribing systemic antibiotics to eliminate periodontal pathogens.\nB. Utilizing non-steroidal anti-inflammatory drugs (NSAIDs) to reduce prostaglandin-mediated inflammation.\nC. Administering antioxidants to neutralize free radicals in periodontal tissues.\nD. Enhancing insulin sensitivity using thiazolidinediones to improve glycemic control.\nE. Inhibiting NLRP3 inflammasome activation to decrease production of pro-inflammatory cytokines.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_394","media":["validation_394_0.mp4"],"messages":[{"role":"user","question":"Which of the following drugs can treat the disease shown in the video?","answer":"E","hint":"","options":{"A":"Insulin","B":"Simvastatin","C":"Atenolol","D":"Penicillin","E":"Metformin"},"choices":[],"video_id":"Dentistry_3","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following drugs can treat the disease shown in the video?\nA. Insulin\nB. Simvastatin\nC. Atenolol\nD. Penicillin\nE. Metformin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_395","media":["validation_395_0.mp4"],"messages":[{"role":"user","question":"This data structure is called a **______________**.","answer":"max heap","hint":"","options":{},"choices":[],"video_id":"Computer_Science_18","question_type":"open-ended","subject":"Computer Science","prompt":"<video>This data structure is called a **______________**."}]},{"id":"validation_396","media":["validation_396_0.mp4"],"messages":[{"role":"user","question":"What is the sorting algorithm used in the video?","answer":"B","hint":"","options":{"A":"insertion sort","B":"Heap sort","C":"selection sort","D":"Merge sort","E":"Bubble sort"},"choices":[],"video_id":"Computer_Science_18","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What is the sorting algorithm used in the video?\nA. insertion sort\nB. Heap sort\nC. selection sort\nD. Merge sort\nE. Bubble sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_397","media":["validation_397_0.mp4"],"messages":[{"role":"user","question":"Which of the following sorting algorithms has the same worst-case time complexity as the algorithm shown in the video?","answer":"C","hint":"","options":{"A":"Insertion Sort","B":"Radix sort","C":"Merge Sort","D":"Quick Sort","E":"Counting Sort"},"choices":[],"video_id":"Computer_Science_18","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following sorting algorithms has the same worst-case time complexity as the algorithm shown in the video?\nA. Insertion Sort\nB. Radix sort\nC. Merge Sort\nD. Quick Sort\nE. Counting Sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_398","media":["validation_398_0.mp4"],"messages":[{"role":"user","question":"Based on the content shown in the video, it is speculated what drugs the doctor injected into the patient before the experiment.","answer":"D","hint":"","options":{"A":"Halothane","B":"Bupivacaine","C":"Nitrous Oxide","D":"Propofol","E":"Lidocaine"},"choices":[],"video_id":"Pharmacy_11","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the content shown in the video, it is speculated what drugs the doctor injected into the patient before the experiment.\nA. Halothane\nB. Bupivacaine\nC. Nitrous Oxide\nD. Propofol\nE. Lidocaine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_399","media":["validation_399_0.mp4"],"messages":[{"role":"user","question":"what kind of effect is showed in the video?","answer":"E","hint":"","options":{"A":"Noise","B":"Bloom effect","C":"Aliasing","D":"Banding","E":"jello effect"},"choices":[],"video_id":"Art_5","question_type":"multiple-choice","subject":"Art","prompt":"<video>what kind of effect is showed in the video?\nA. Noise\nB. Bloom effect\nC. Aliasing\nD. Banding\nE. jello effect\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_4","media":["validation_4_0.mp4"],"messages":[{"role":"user","question":"Which physical variable is changed in the animation?","answer":"Resistance","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_0","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>Which physical variable is changed in the animation?"}]},{"id":"validation_40","media":["validation_40_0.mp4"],"messages":[{"role":"user","question":"Which move motion in the video lose the system energy?","answer":"A","hint":"","options":{"A":"Third one","B":"Second one","C":"All","D":"First one","E":"Two of the three"},"choices":[],"video_id":"Mechanics_2","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion in the video lose the system energy?\nA. Third one\nB. Second one\nC. All\nD. First one\nE. Two of the three\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_400","media":["validation_400_0.mp4"],"messages":[{"role":"user","question":"To assess the quality of the workers' work in the video, it can be measured by determining the soil's **__________**.","answer":"dry unit weight","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_10","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>To assess the quality of the workers' work in the video, it can be measured by determining the soil's **__________**."}]},{"id":"validation_401","media":["validation_401_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the mechanism of action of the most appropriate initial antibiotic treatment for this patient?","answer":"D","hint":"","options":{"A":"Inhibition of peptidoglycan cross-linking by binding to penicillin-binding proteins","B":"Inhibition of the 30S ribosomal subunit, preventing attachment of aminoacyl-tRNA","C":"Inhibition of DNA gyrase (topoisomerase II), preventing DNA replication","D":"Inhibition of the 30S ribosomal subunit causing misreading of mRNA","E":"Inhibition of the 50S ribosomal subunit, preventing peptide bond formation"},"choices":[],"video_id":"Pharmacy_12","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following is the mechanism of action of the most appropriate initial antibiotic treatment for this patient?\nA. Inhibition of peptidoglycan cross-linking by binding to penicillin-binding proteins\nB. Inhibition of the 30S ribosomal subunit, preventing attachment of aminoacyl-tRNA\nC. Inhibition of DNA gyrase (topoisomerase II), preventing DNA replication\nD. Inhibition of the 30S ribosomal subunit causing misreading of mRNA\nE. Inhibition of the 50S ribosomal subunit, preventing peptide bond formation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_402","media":["validation_402_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following virulence factors is most responsible for the severe symptoms associated with the disease shown in the video?","answer":"D","hint":"","options":{"A":"Production of pyrogenic exotoxin causing massive cytokine release","B":"Hemolysin-mediated destruction of red blood cells","C":"Neurotoxin-mediated inhibition of acetylcholine release at neuromuscular junctions","D":"Antiphagocytic capsule composed of F1 antigen preventing host immune response","E":"Endospore formation allowing survival in harsh conditions"},"choices":[],"video_id":"Pharmacy_12","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the video, which of the following virulence factors is most responsible for the severe symptoms associated with the disease shown in the video?\nA. Production of pyrogenic exotoxin causing massive cytokine release\nB. Hemolysin-mediated destruction of red blood cells\nC. Neurotoxin-mediated inhibition of acetylcholine release at neuromuscular junctions\nD. Antiphagocytic capsule composed of F1 antigen preventing host immune response\nE. Endospore formation allowing survival in harsh conditions\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_403","media":["validation_403_0.mp4"],"messages":[{"role":"user","question":"How many parent pointers must be followed during the `find(2)` operation to reach its representative?","answer":"2","hint":"","options":{},"choices":[],"video_id":"Computer_Science_19","question_type":"open-ended","subject":"Computer Science","prompt":"<video>How many parent pointers must be followed during the `find(2)` operation to reach its representative?"}]},{"id":"validation_404","media":["validation_404_0.mp4"],"messages":[{"role":"user","question":"What kind of idea of algorithm is used in the showed video below?","answer":"B","hint":"","options":{"A":"backtracking","B":"dynamic programming","C":"greedy","D":"parallel","E":"branch and bound"},"choices":[],"video_id":"Computer_Science_20","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of idea of algorithm is used in the showed video below?\nA. backtracking\nB. dynamic programming\nC. greedy\nD. parallel\nE. branch and bound\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_405","media":["validation_405_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes the time complexity of this algorithm?","answer":"A","hint":"","options":{"A":"The time complexity is O(n), because each Fibonacci number up to n is computed exactly once due to memoization.","B":"The time complexity is O(2^n), because the recursive computation without memoization would generate an exponential number of calls.","C":"The time complexity is O(n^2), because storing computed values in the table adds an extra linear factor.","D":"The time complexity is O(log n), because the depth of the recursive tree is proportional to log n.","E":"The time complexity is O(1), because memoization reduces the computation to constant time."},"choices":[],"video_id":"Computer_Science_20","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements correctly describes the time complexity of this algorithm?\nA. The time complexity is O(n), because each Fibonacci number up to n is computed exactly once due to memoization.\nB. The time complexity is O(2^n), because the recursive computation without memoization would generate an exponential number of calls.\nC. The time complexity is O(n^2), because storing computed values in the table adds an extra linear factor.\nD. The time complexity is O(log n), because the depth of the recursive tree is proportional to log n.\nE. The time complexity is O(1), because memoization reduces the computation to constant time.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_406","media":["validation_406_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about the shown algorithm is correct?","answer":"C","hint":"","options":{"A":"The algorithm has a space complexity of O(1) because it only needs to store the last two computed Fibonacci numbers.","B":"The algorithm's recursive calls form a binary tree of height O(log n), which reduces the space complexity to O(log n).","C":"The algorithm uses top-down dynamic programming with memoization, resulting in a space complexity of O(n) due to stored results and recursive call stack.","D":"The algorithm does not benefit from memoization because Fibonacci numbers are recalculated multiple times.","E":"The algorithm has a space complexity of O(n²) because it stores all subproblem solutions in a two-dimensional table."},"choices":[],"video_id":"Computer_Science_20","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements about the shown algorithm is correct?\nA. The algorithm has a space complexity of O(1) because it only needs to store the last two computed Fibonacci numbers.\nB. The algorithm's recursive calls form a binary tree of height O(log n), which reduces the space complexity to O(log n).\nC. The algorithm uses top-down dynamic programming with memoization, resulting in a space complexity of O(n) due to stored results and recursive call stack.\nD. The algorithm does not benefit from memoization because Fibonacci numbers are recalculated multiple times.\nE. The algorithm has a space complexity of O(n²) because it stores all subproblem solutions in a two-dimensional table.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_407","media":["validation_407_0.mp4"],"messages":[{"role":"user","question":"Events in the video illustrate how groups challenge the dominant assumption of **_____**.","answer":"heteronormativity","hint":"","options":{},"choices":[],"video_id":"Geography_8","question_type":"open-ended","subject":"Geography","prompt":"<video>Events in the video illustrate how groups challenge the dominant assumption of **_____**."}]},{"id":"validation_408","media":["validation_408_0.mp4"],"messages":[{"role":"user","question":"In different cities, the form of expression and participation of the this movement in video vary greatly. What factors are mainly affected by this difference?","answer":"A","hint":"","options":{"A":"Differences in the political environment in various places","B":"Different levels of education","C":"The level of economic development","D":"The perfection of transportation infrastructure","E":"The coverage rate of social media"},"choices":[],"video_id":"Geography_8","question_type":"multiple-choice","subject":"Geography","prompt":"<video>In different cities, the form of expression and participation of the this movement in video vary greatly. What factors are mainly affected by this difference?\nA. Differences in the political environment in various places\nB. Different levels of education\nC. The level of economic development\nD. The perfection of transportation infrastructure\nE. The coverage rate of social media\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_409","media":["validation_409_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following organisational structures is most likely to be embodied by the company?","answer":"C","hint":"","options":{"A":"Functional Organizational Structure, with specialized departments and a clear chain of command.","B":"Divisional Organizational Structure, organized around products, markets, or geographical regions.","C":"Flatarchy Organizational Structure, combining flat structure and hierarchy to promote flexibility and autonomy.","D":"Matrix Organizational Structure, featuring dual reporting relationships between functional and project managers.","E":"Tall Organizational Structure, characterized by many hierarchical levels and a narrow span of control."},"choices":[],"video_id":"Management_6","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video description, which of the following organisational structures is most likely to be embodied by the company?\nA. Functional Organizational Structure, with specialized departments and a clear chain of command.\nB. Divisional Organizational Structure, organized around products, markets, or geographical regions.\nC. Flatarchy Organizational Structure, combining flat structure and hierarchy to promote flexibility and autonomy.\nD. Matrix Organizational Structure, featuring dual reporting relationships between functional and project managers.\nE. Tall Organizational Structure, characterized by many hierarchical levels and a narrow span of control.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_41","media":["validation_41_0.mp4"],"messages":[{"role":"user","question":"The treaty signed in the video involves ______ countries and has had a profound impact on economic, social, and political aspects.","answer":"six","hint":"","options":{},"choices":[],"video_id":"Economics_0","question_type":"open-ended","subject":"Economics","prompt":"<video>The treaty signed in the video involves ______ countries and has had a profound impact on economic, social, and political aspects."}]},{"id":"validation_410","media":["validation_410_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following organizational cultures is most likely reflected by the company's environment?","answer":"C","hint":"","options":{"A":"Hierarchy Culture, emphasizing formal structure and control.","B":"Market Culture, focusing on competitiveness and achieving goals.","C":"Clan Culture, promoting a family-like workplace with emphasis on collaboration.","D":"Mechanistic Culture, characterized by rigid procedures and centralization.","E":"Bureaucratic Culture, prioritizing rules and formalities."},"choices":[],"video_id":"Management_6","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video description, which of the following organizational cultures is most likely reflected by the company's environment?\nA. Hierarchy Culture, emphasizing formal structure and control.\nB. Market Culture, focusing on competitiveness and achieving goals.\nC. Clan Culture, promoting a family-like workplace with emphasis on collaboration.\nD. Mechanistic Culture, characterized by rigid procedures and centralization.\nE. Bureaucratic Culture, prioritizing rules and formalities.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_411","media":["validation_411_0.mp4"],"messages":[{"role":"user","question":"Why is the final ball faster than the initial ball?","answer":"E","hint":"","options":{"A":"The ball is connected to an external power supply and its speed increases under the influence of magnetic force.","B":"The thermal energy of the ball is converted into kinetic energy, causing the speed to increase.","C":"The speed of the ball increases due to the force of gravity.","D":"The speed of the ball increases due to the effect of atmospheric pressure.","E":"The potential energy of the ball in the magnetic field is converted into kinetic energy, causing the ball's speed to increase."},"choices":[],"video_id":"Electromagnetism_21","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why is the final ball faster than the initial ball?\nA. The ball is connected to an external power supply and its speed increases under the influence of magnetic force.\nB. The thermal energy of the ball is converted into kinetic energy, causing the speed to increase.\nC. The speed of the ball increases due to the force of gravity.\nD. The speed of the ball increases due to the effect of atmospheric pressure.\nE. The potential energy of the ball in the magnetic field is converted into kinetic energy, causing the ball's speed to increase.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_412","media":["validation_412_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains how electromagnetic effects influence the behavior of the metal balls?","answer":"C","hint":"","options":{"A":"The magnetic field exerts a force on the moving balls due to their motion, causing them to speed up, resulting in greater kinetic energy transfer.","B":"Electromagnetic forces between the colliding balls repel them before contact, reducing the energy loss during the collision.","C":"Electromagnetic induction leads to eddy currents that oppose their motion, but because the collisions are rapid and the balls are conductive, these effects are negligible, allowing for nearly elastic collisions.","D":"The magnetic field aligns the magnetic domains in the metal balls, converting some thermal energy into kinetic energy during the collision, thus increasing the balls' speed.","E":"Induced currents in the metal balls due to the magnetic field create forces that accelerate the balls during collision, increasing the speed of the leftmost ball after collision."},"choices":[],"video_id":"Electromagnetism_21","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains how electromagnetic effects influence the behavior of the metal balls?\nA. The magnetic field exerts a force on the moving balls due to their motion, causing them to speed up, resulting in greater kinetic energy transfer.\nB. Electromagnetic forces between the colliding balls repel them before contact, reducing the energy loss during the collision.\nC. Electromagnetic induction leads to eddy currents that oppose their motion, but because the collisions are rapid and the balls are conductive, these effects are negligible, allowing for nearly elastic collisions.\nD. The magnetic field aligns the magnetic domains in the metal balls, converting some thermal energy into kinetic energy during the collision, thus increasing the balls' speed.\nE. Induced currents in the metal balls due to the magnetic field create forces that accelerate the balls during collision, increasing the speed of the leftmost ball after collision.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_413","media":["validation_413_0.mp4"],"messages":[{"role":"user","question":"Which of the following statement about the video is true?","answer":"E","hint":"","options":{"A":"The magnetic field induces eddy currents in the moving balls that create opposing magnetic fields, significantly damping their motion and reducing the efficiency of momentum transfer during collisions.","B":"The conductive balls, moving through the magnetic field, experience Lorentz forces that accelerate them, compensating for any energy losses due to collisions and maintaining constant speed.","C":"The magnetic field causes alignment of magnetic domains within the balls, converting some thermal energy into kinetic energy during collisions, thereby increasing the balls' speed after collisions.","D":"Electromagnetic induction causes charge separation within the balls, generating electrostatic forces that repel the balls before contact, reducing kinetic energy loss during collisions.","E":"The induced electromagnetic effects, such as eddy currents and magnetic forces, are minimal due to the low velocities and symmetry of the system, allowing the collisions to remain nearly elastic."},"choices":[],"video_id":"Electromagnetism_21","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following statement about the video is true?\nA. The magnetic field induces eddy currents in the moving balls that create opposing magnetic fields, significantly damping their motion and reducing the efficiency of momentum transfer during collisions.\nB. The conductive balls, moving through the magnetic field, experience Lorentz forces that accelerate them, compensating for any energy losses due to collisions and maintaining constant speed.\nC. The magnetic field causes alignment of magnetic domains within the balls, converting some thermal energy into kinetic energy during collisions, thereby increasing the balls' speed after collisions.\nD. Electromagnetic induction causes charge separation within the balls, generating electrostatic forces that repel the balls before contact, reducing kinetic energy loss during collisions.\nE. The induced electromagnetic effects, such as eddy currents and magnetic forces, are minimal due to the low velocities and symmetry of the system, allowing the collisions to remain nearly elastic.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_414","media":["validation_414_0.mp4"],"messages":[{"role":"user","question":"Which law does the experiment show in the video? ","answer":"B","hint":"","options":{"A":"Hooke's Law","B":"Newton's Laws","C":"Bernoulli's Law","D":"Archimedes' Law","E":"Joule's Law"},"choices":[],"video_id":"Mechanics_18","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which law does the experiment show in the video? \nA. Hooke's Law\nB. Newton's Laws\nC. Bernoulli's Law\nD. Archimedes' Law\nE. Joule's Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_415","media":["validation_415_0.mp4"],"messages":[{"role":"user","question":"What reaction is reflected in the video?","answer":"C","hint":"","options":{"A":"Separation","B":"Crystallization","C":"Gelation","D":"Gel dissolution","E":"Melting"},"choices":[],"video_id":"Biomedical_Engineering_8","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What reaction is reflected in the video?\nA. Separation\nB. Crystallization\nC. Gelation\nD. Gel dissolution\nE. Melting\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_416","media":["validation_416_0.mp4"],"messages":[{"role":"user","question":"Which phenomenon best explains the phenomenon shown in the video?","answer":"C","hint":"","options":{"A":"Magnetic attraction due to ferromagnetic properties of the particles.","B":"Thermal convection currents causing upward movement of particles.","C":"Electrostatic forces causing attraction between the charged balloon and the particles.","D":"Capillary action drawing the powder upward through liquid wicking.","E":"Chemical bonding between functional groups on the particles and balloon surfaces."},"choices":[],"video_id":"Biomedical_Engineering_8","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which phenomenon best explains the phenomenon shown in the video?\nA. Magnetic attraction due to ferromagnetic properties of the particles.\nB. Thermal convection currents causing upward movement of particles.\nC. Electrostatic forces causing attraction between the charged balloon and the particles.\nD. Capillary action drawing the powder upward through liquid wicking.\nE. Chemical bonding between functional groups on the particles and balloon surfaces.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_417","media":["validation_417_0.mp4"],"messages":[{"role":"user","question":"Which of the following modifications to the process in the video would be most effective?","answer":"C","hint":"","options":{"A":"Decrease the viscosity of the polymer solution by reducing polymer concentration.","B":"Lower the applied voltage between the spinneret (needle) and the collector.","C":"Increase the electrical conductivity of the polymer by adding ionic salts.","D":"Shorten the distance between the spinneret and the collector.","E":"Use a polymer with a higher molecular weight to increase chain entanglements."},"choices":[],"video_id":"Biomedical_Engineering_8","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following modifications to the process in the video would be most effective?\nA. Decrease the viscosity of the polymer solution by reducing polymer concentration.\nB. Lower the applied voltage between the spinneret (needle) and the collector.\nC. Increase the electrical conductivity of the polymer by adding ionic salts.\nD. Shorten the distance between the spinneret and the collector.\nE. Use a polymer with a higher molecular weight to increase chain entanglements.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_418","media":["validation_418_0.mp4"],"messages":[{"role":"user","question":"After acid hydrolysis with sulfuric acid, the pH of the solution in the video is adjusted using  ______ .","answer":"NaOH","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_9","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>After acid hydrolysis with sulfuric acid, the pH of the solution in the video is adjusted using  ______ ."}]},{"id":"validation_419","media":["validation_419_0.mp4"],"messages":[{"role":"user","question":"What reaction process is reflected in the video?","answer":"B","hint":"","options":{"A":"Physical reaction","B":"Hydrolysis reaction","C":"Enzymatic reaction","D":"Inorganic reaction","E":"Physical adsorption"},"choices":[],"video_id":"Biomedical_Engineering_9","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What reaction process is reflected in the video?\nA. Physical reaction\nB. Hydrolysis reaction\nC. Enzymatic reaction\nD. Inorganic reaction\nE. Physical adsorption\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_42","media":["validation_42_0.mp4"],"messages":[{"role":"user","question":"Which of the following virus infections does it belong to?","answer":"C","hint":"","options":{"A":"Norovirus","B":"Measles virus","C":"Hemorrhagic fever virus","D":"Human papillomavirus","E":"Arboviral encephalitis virus"},"choices":[],"video_id":"Basic_Medicine_0","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following virus infections does it belong to?\nA. Norovirus\nB. Measles virus\nC. Hemorrhagic fever virus\nD. Human papillomavirus\nE. Arboviral encephalitis virus\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_420","media":["validation_420_0.mp4"],"messages":[{"role":"user","question":"Which of the following techniques can the operations in the video be applied to?","answer":"C","hint":"","options":{"A":"Extracting oils from the biomass for biodiesel production.","B":"Enhancing the protein content of the biomass for animal feed supplements.","C":"Converting complex polysaccharides into simple fermentable sugars for ethanol fermentation.","D":"Synthesizing bioplastics by polymerizing monomers derived from the biomass.","E":"Precipitating inorganic minerals to enhance the soil fertility after biomass decomposition, aiming at promoting healthy plant growth."},"choices":[],"video_id":"Biomedical_Engineering_9","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following techniques can the operations in the video be applied to?\nA. Extracting oils from the biomass for biodiesel production.\nB. Enhancing the protein content of the biomass for animal feed supplements.\nC. Converting complex polysaccharides into simple fermentable sugars for ethanol fermentation.\nD. Synthesizing bioplastics by polymerizing monomers derived from the biomass.\nE. Precipitating inorganic minerals to enhance the soil fertility after biomass decomposition, aiming at promoting healthy plant growth.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_421","media":["validation_421_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why precise pH adjustments are performed?","answer":"D","hint":"","options":{"A":"To prevent the hydrolysis of hemicellulose at inappropriate pH levels.","B":"To effectively inactivate residual acid that could oxidize and damage the biomass.","C":"To facilitate the precipitation of lignin components from the solution.","D":"To optimize the pH for maximal enzymatic activity of cellulase during cellulose degradation.","E":"To promote the formation of fermentable sugars through efficient acid-catalyzed reactions."},"choices":[],"video_id":"Biomedical_Engineering_9","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following best explains why precise pH adjustments are performed?\nA. To prevent the hydrolysis of hemicellulose at inappropriate pH levels.\nB. To effectively inactivate residual acid that could oxidize and damage the biomass.\nC. To facilitate the precipitation of lignin components from the solution.\nD. To optimize the pH for maximal enzymatic activity of cellulase during cellulose degradation.\nE. To promote the formation of fermentable sugars through efficient acid-catalyzed reactions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_422","media":["validation_422_0.mp4"],"messages":[{"role":"user","question":"Based on the observed changes in the waveform in the video, where the frequency changes while the envelope remains constant, the modulation technique being demonstrated is **______**.","answer":"frequency modulation","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_11","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>Based on the observed changes in the waveform in the video, where the frequency changes while the envelope remains constant, the modulation technique being demonstrated is **______**."}]},{"id":"validation_423","media":["validation_423_0.mp4"],"messages":[{"role":"user","question":"What characteristic does the signal maintain during the operation?","answer":"E","hint":"","options":{"A":"no correct answer","B":"peak","C":"mean","D":"amplitude","E":"envelope"},"choices":[],"video_id":"Electronics_and_Communication_11","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>What characteristic does the signal maintain during the operation?\nA. no correct answer\nB. peak\nC. mean\nD. amplitude\nE. envelope\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_424","media":["validation_424_0.mp4"],"messages":[{"role":"user","question":"To enhance the stability of the structure shown in the video, the wall should have a high surface ______.","answer":"Roughness","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_11","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>To enhance the stability of the structure shown in the video, the wall should have a high surface ______."}]},{"id":"validation_425","media":["validation_425_0.mp4"],"messages":[{"role":"user","question":"Based on the scenes and environment shown in the video, the most likely geological hazard these vehicles may encounter is ______.","answer":"rockfall","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_12","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Based on the scenes and environment shown in the video, the most likely geological hazard these vehicles may encounter is ______."}]},{"id":"validation_426","media":["validation_426_0.mp4"],"messages":[{"role":"user","question":"In legal terms, incidents like the condition depicted in the video are classified as an '____'.","answer":"Act of God","hint":"","options":{},"choices":[],"video_id":"Law_5","question_type":"open-ended","subject":"Law","prompt":"<video>In legal terms, incidents like the condition depicted in the video are classified as an '____'."}]},{"id":"validation_427","media":["validation_427_0.mp4"],"messages":[{"role":"user","question":"If the contractual obligations cannot be fulfilled due to the events showed in the video, whether the party need to bear the responsibility?","answer":"A","hint":"","options":{"A":"No","B":"Liability may vary depending on jurisdictional views on force majeure.","C":"The party must prove due diligence to avoid liability.","D":"It depends on the specific articles of the contract.","E":"The party can be exempted from liability in some events in the video, but not in other events."},"choices":[],"video_id":"Law_5","question_type":"multiple-choice","subject":"Law","prompt":"<video>If the contractual obligations cannot be fulfilled due to the events showed in the video, whether the party need to bear the responsibility?\nA. No\nB. Liability may vary depending on jurisdictional views on force majeure.\nC. The party must prove due diligence to avoid liability.\nD. It depends on the specific articles of the contract.\nE. The party can be exempted from liability in some events in the video, but not in other events.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_428","media":["validation_428_0.mp4"],"messages":[{"role":"user","question":"Based on principles of insurance law and contract interpretation, which of the following arguments is most likely to support Seaside Enterprises in obtaining coverage for its loss under the circumstances in the video?","answer":"C","hint":"","options":{"A":"Arguing that the doctrine of reasonable expectations dictates that the policy should cover the damage shown in the video.","B":"Asserting that Oceanic Insurance engaged in bad faith by denying the claim without proper investigation.","C":"Contending that ambiguities in the policy language should be construed against Oceanic Insurance under the doctrine of contra proferentem.","D":"Claiming that the damage shown in the video was an unforeseeable Act of God, thus obligating Oceanic Insurance to cover the loss.","E":"Maintaining that the policy's failure to specifically exclude the damage shown in the video means such events are covered."},"choices":[],"video_id":"Law_5","question_type":"multiple-choice","subject":"Law","prompt":"<video>Based on principles of insurance law and contract interpretation, which of the following arguments is most likely to support Seaside Enterprises in obtaining coverage for its loss under the circumstances in the video?\nA. Arguing that the doctrine of reasonable expectations dictates that the policy should cover the damage shown in the video.\nB. Asserting that Oceanic Insurance engaged in bad faith by denying the claim without proper investigation.\nC. Contending that ambiguities in the policy language should be construed against Oceanic Insurance under the doctrine of contra proferentem.\nD. Claiming that the damage shown in the video was an unforeseeable Act of God, thus obligating Oceanic Insurance to cover the loss.\nE. Maintaining that the policy's failure to specifically exclude the damage shown in the video means such events are covered.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_429","media":["validation_429_0.mp4"],"messages":[{"role":"user","question":"At the end of the video, the boy reaches ______ in cycling.","answer":"mastery","hint":"","options":{},"choices":[],"video_id":"Literature_3","question_type":"open-ended","subject":"Literature","prompt":"<video>At the end of the video, the boy reaches ______ in cycling."}]},{"id":"validation_43","media":["validation_43_0.mp4"],"messages":[{"role":"user","question":"What is the main economic purpose of the event shown in the video?","answer":"D","hint":"","options":{"A":"Unify the political system and social system of member states","B":"Develop a unified labor market across member states","C":"Create a common currency for all member states","D":"Eliminate trade barriers between member states and promote economic integration","E":"Strengthen exchanges among member states in the fields of culture and education"},"choices":[],"video_id":"Economics_0","question_type":"multiple-choice","subject":"Economics","prompt":"<video>What is the main economic purpose of the event shown in the video?\nA. Unify the political system and social system of member states\nB. Develop a unified labor market across member states\nC. Create a common currency for all member states\nD. Eliminate trade barriers between member states and promote economic integration\nE. Strengthen exchanges among member states in the fields of culture and education\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_430","media":["validation_430_0.mp4"],"messages":[{"role":"user","question":"Based on the narrative described in the video, which of the following themes is most prominently illustrated?","answer":"A","hint":"","options":{"A":"Persistence in the face of adversity leads to personal growth.","B":"The power of competition among peers drives success.","C":"The pursuit of knowledge without guidance leads to failure.","D":"The inevitability of destiny shapes one's path.","E":"The struggle between individual desires and societal expectations."},"choices":[],"video_id":"Literature_3","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the narrative described in the video, which of the following themes is most prominently illustrated?\nA. Persistence in the face of adversity leads to personal growth.\nB. The power of competition among peers drives success.\nC. The pursuit of knowledge without guidance leads to failure.\nD. The inevitability of destiny shapes one's path.\nE. The struggle between individual desires and societal expectations.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_431","media":["validation_431_0.mp4"],"messages":[{"role":"user","question":"Based on the video narrative, which stage of Erik Erikson's theory of psychosocial development is most prominently illustrated?","answer":"D","hint":"","options":{"A":"Trust vs. Mistrust","B":"Autonomy vs. Shame and Doubt","C":"Initiative vs. Guilt","D":"Industry vs. Inferiority","E":"Identity vs. Role Confusion"},"choices":[],"video_id":"Literature_3","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the video narrative, which stage of Erik Erikson's theory of psychosocial development is most prominently illustrated?\nA. Trust vs. Mistrust\nB. Autonomy vs. Shame and Doubt\nC. Initiative vs. Guilt\nD. Industry vs. Inferiority\nE. Identity vs. Role Confusion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_432","media":["validation_432_0.mp4"],"messages":[{"role":"user","question":"Based on the video, considering its application and effectiveness, the material used is most likely a ______.","answer":"geomembrane","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_13","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Based on the video, considering its application and effectiveness, the material used is most likely a ______."}]},{"id":"validation_433","media":["validation_433_0.mp4"],"messages":[{"role":"user","question":"In the practice of managing irrigation as shown in the video, the adjustment of water flow paths through soil channels between crops resembles the civil engineering concept of **___**.","answer":"flow net","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_14","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the practice of managing irrigation as shown in the video, the adjustment of water flow paths through soil channels between crops resembles the civil engineering concept of **___**."}]},{"id":"validation_434","media":["validation_434_0.mp4"],"messages":[{"role":"user","question":"Based on the scenario depicted in the video, which of the following public health interventions is most critical?","answer":"B","hint":"","options":{"A":"Recommend boiling of drinking water to prevent giardiasis transmission","B":"Administer post-exposure prophylaxis to individuals potentially exposed to the dog","C":"Initiate vector control measures to reduce mosquito populations in the area","D":"Conduct mass screening for brucellosis among livestock handlers","E":"Distribute educational materials on preventing toxoplasmosis infection"},"choices":[],"video_id":"Preventive_Medicine_7","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Based on the scenario depicted in the video, which of the following public health interventions is most critical?\nA. Recommend boiling of drinking water to prevent giardiasis transmission\nB. Administer post-exposure prophylaxis to individuals potentially exposed to the dog\nC. Initiate vector control measures to reduce mosquito populations in the area\nD. Conduct mass screening for brucellosis among livestock handlers\nE. Distribute educational materials on preventing toxoplasmosis infection\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_435","media":["validation_435_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the pathogenesis of disease?","answer":"C","hint":"","options":{"A":"Demyelination of central nervous system neurons due to an autoimmune response triggered by a DNA virus","B":"Exotoxin-mediated inhibition of acetylcholine release at neuromuscular junctions","C":"Retrograde axonal transport of an RNA virus leading to encephalitis","D":"Ingestion of prion-contaminated feed causing spongiform degeneration of the brain","E":"Fungal invasion of the respiratory tract causing granulomatous lesions"},"choices":[],"video_id":"Preventive_Medicine_7","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following best explains the pathogenesis of disease?\nA. Demyelination of central nervous system neurons due to an autoimmune response triggered by a DNA virus\nB. Exotoxin-mediated inhibition of acetylcholine release at neuromuscular junctions\nC. Retrograde axonal transport of an RNA virus leading to encephalitis\nD. Ingestion of prion-contaminated feed causing spongiform degeneration of the brain\nE. Fungal invasion of the respiratory tract causing granulomatous lesions\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_436","media":["validation_436_0.mp4"],"messages":[{"role":"user","question":"What problem in economics does the crisis shown in the video mainly reflect?","answer":"E","hint":"","options":{"A":"Market price fluctuations caused by imbalance between supply and demand","B":"Pressure from rising labor costs","C":"Monetary policy changes affecting investment stability","D":"Inflationary trends due to excessive currency issuance","E":"Financial risks and lack of supervision"},"choices":[],"video_id":"Economics_4","question_type":"multiple-choice","subject":"Economics","prompt":"<video>What problem in economics does the crisis shown in the video mainly reflect?\nA. Market price fluctuations caused by imbalance between supply and demand\nB. Pressure from rising labor costs\nC. Monetary policy changes affecting investment stability\nD. Inflationary trends due to excessive currency issuance\nE. Financial risks and lack of supervision\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_437","media":["validation_437_0.mp4"],"messages":[{"role":"user","question":"Which of the following economic factors most likely contributed to these trends?","answer":"D","hint":"","options":{"A":"An increase in housing supply due to aggressive government construction projects.","B":"A demographic shift leading to a decreased population and lower housing demand.","C":"A significant increase in unemployment rates affecting consumers' purchasing power.","D":"A tightening of monetary policy resulting in higher interest rates.","E":"A surge in foreign investment leading to an overvalued housing market correction."},"choices":[],"video_id":"Economics_4","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following economic factors most likely contributed to these trends?\nA. An increase in housing supply due to aggressive government construction projects.\nB. A demographic shift leading to a decreased population and lower housing demand.\nC. A significant increase in unemployment rates affecting consumers' purchasing power.\nD. A tightening of monetary policy resulting in higher interest rates.\nE. A surge in foreign investment leading to an overvalued housing market correction.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_438","media":["validation_438_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most likely risk or challenge for the bank as a consequence of these trends shown in the video?","answer":"E","hint":"","options":{"A":"Excess liquidity due to increased household savings.","B":"Increased interest expenses due to higher deposit rates.","C":"Increased competition from foreign banks entering the market.","D":"Higher demand for corporate loans offsetting declines in housing loans.","E":"Increased credit risk from residential mortgage defaults."},"choices":[],"video_id":"Economics_4","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following is the most likely risk or challenge for the bank as a consequence of these trends shown in the video?\nA. Excess liquidity due to increased household savings.\nB. Increased interest expenses due to higher deposit rates.\nC. Increased competition from foreign banks entering the market.\nD. Higher demand for corporate loans offsetting declines in housing loans.\nE. Increased credit risk from residential mortgage defaults.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_439","media":["validation_439_0.mp4"],"messages":[{"role":"user","question":"Based on the video, among these factors, Factor ____ has the shortest half-life .","answer":"VII","hint":"","options":{},"choices":[],"video_id":"Pharmacy_13","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>Based on the video, among these factors, Factor ____ has the shortest half-life ."}]},{"id":"validation_44","media":["validation_44_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the primary benefits brought by the treaty shown in the video?","answer":"A","hint":"","options":{"A":"By creating a common market allows free movement of goods, services, capital, and labor, letting members specialize by their strengths.","B":"By adopting a single currency to eliminate exchange rate fluctuations and reduce transaction costs among member states.","C":"By imposing uniform protectionist tariffs against non-member countries to shield domestic industries from external competition.","D":"By integrating fiscal policies to redistribute wealth from richer to poorer member states, reducing economic disparities.","E":"By standardizing labor laws and working conditions across member states to prevent a 'race to the bottom' in labor standards."},"choices":[],"video_id":"Economics_0","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following best explains the primary benefits brought by the treaty shown in the video?\nA. By creating a common market allows free movement of goods, services, capital, and labor, letting members specialize by their strengths.\nB. By adopting a single currency to eliminate exchange rate fluctuations and reduce transaction costs among member states.\nC. By imposing uniform protectionist tariffs against non-member countries to shield domestic industries from external competition.\nD. By integrating fiscal policies to redistribute wealth from richer to poorer member states, reducing economic disparities.\nE. By standardizing labor laws and working conditions across member states to prevent a 'race to the bottom' in labor standards.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_440","media":["validation_440_0.mp4"],"messages":[{"role":"user","question":"In the video, the structure on the cell membrane represents the _____.","answer":"sodium-potassium pump","hint":"","options":{},"choices":[],"video_id":"Neurobiology_16","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, the structure on the cell membrane represents the _____."}]},{"id":"validation_441","media":["validation_441_0.mp4"],"messages":[{"role":"user","question":"If this video shows an action potential of a neuron, what kind of ions are the blue dots represent for?","answer":"A","hint":"","options":{"A":"K+","B":"Cl-","C":"Na+","D":"H+","E":"Ca2+"},"choices":[],"video_id":"Neurobiology_16","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>If this video shows an action potential of a neuron, what kind of ions are the blue dots represent for?\nA. K+\nB. Cl-\nC. Na+\nD. H+\nE. Ca2+\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_442","media":["validation_442_0.mp4"],"messages":[{"role":"user","question":"What is the explanation of the shown phenomenon?","answer":"B","hint":"","options":{"A":"Because the plastic rod is charged, after direct contact with the iron pieces, the iron pieces acquire opposite charges, causing them to attract each other.","B":"Because the plastic rod is charged and is not in direct contact with the iron pieces, the iron pieces are inductively charged and carry the same charge and repel each other.","C":"Because the air ambient temperature is high, the iron sheets expand and separate when heated.","D":"Because the plastic rod has a high temperature, the heat is transferred to the iron sheets causing them to expand and separate.","E":"Because the plastic rod is magnetized, and when brought near the iron pieces, induces magnetic forces causing the iron pieces to attract each other."},"choices":[],"video_id":"Electrical_Engineering_16","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What is the explanation of the shown phenomenon?\nA. Because the plastic rod is charged, after direct contact with the iron pieces, the iron pieces acquire opposite charges, causing them to attract each other.\nB. Because the plastic rod is charged and is not in direct contact with the iron pieces, the iron pieces are inductively charged and carry the same charge and repel each other.\nC. Because the air ambient temperature is high, the iron sheets expand and separate when heated.\nD. Because the plastic rod has a high temperature, the heat is transferred to the iron sheets causing them to expand and separate.\nE. Because the plastic rod is magnetized, and when brought near the iron pieces, induces magnetic forces causing the iron pieces to attract each other.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_443","media":["validation_443_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains how the introduction of the dielectric gas affects the final divergence of the leaves of the electroscope?","answer":"D","hint":"","options":{"A":"The dielectric gas reduces the electric field inside the electroscope, decreasing the induced charge separation and resulting in less divergence of the leaves.","B":"The dielectric gas increases the capacitance of the electroscope, allowing it to accumulate more net charge, which causes greater divergence of the leaves.","C":"The dielectric gas serves as an insulating layer that prevents charge induction, so no net charge is transferred, and the leaves do not diverge.","D":"The dielectric gas alters the potential difference, changing the electrostatic forces between the leaves and resulting in a different degree of divergence.","E":"The dielectric gas ionizes under the influence of the external electric field, adding free charges to the electroscope and causing the leaves to diverge more than before."},"choices":[],"video_id":"Electrical_Engineering_16","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following best explains how the introduction of the dielectric gas affects the final divergence of the leaves of the electroscope?\nA. The dielectric gas reduces the electric field inside the electroscope, decreasing the induced charge separation and resulting in less divergence of the leaves.\nB. The dielectric gas increases the capacitance of the electroscope, allowing it to accumulate more net charge, which causes greater divergence of the leaves.\nC. The dielectric gas serves as an insulating layer that prevents charge induction, so no net charge is transferred, and the leaves do not diverge.\nD. The dielectric gas alters the potential difference, changing the electrostatic forces between the leaves and resulting in a different degree of divergence.\nE. The dielectric gas ionizes under the influence of the external electric field, adding free charges to the electroscope and causing the leaves to diverge more than before.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_444","media":["validation_444_0.mp4"],"messages":[{"role":"user","question":"Based on the video depiction, which of the following enzymes is primarily responsible for the process symbolized by the printer?","answer":"A","hint":"","options":{"A":"Reverse transcriptase","B":"Integrase","C":"Protease","D":"RNA polymerase II","E":"DNA polymerase delta"},"choices":[],"video_id":"Basic_Medicine_9","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Based on the video depiction, which of the following enzymes is primarily responsible for the process symbolized by the printer?\nA. Reverse transcriptase\nB. Integrase\nC. Protease\nD. RNA polymerase II\nE. DNA polymerase delta\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_445","media":["validation_445_0.mp4"],"messages":[{"role":"user","question":"For the company shown in the video, what is one of the method to handle the risk associated with ?","answer":"B","hint":"","options":{"A":"diversification","B":"vertical integration","C":"horizontal integration","D":"outsourcing","E":"speculation"},"choices":[],"video_id":"Management_2","question_type":"multiple-choice","subject":"Economics","prompt":"<video>For the company shown in the video, what is one of the method to handle the risk associated with ?\nA. diversification\nB. vertical integration\nC. horizontal integration\nD. outsourcing\nE. speculation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_446","media":["validation_446_0.mp4"],"messages":[{"role":"user","question":"What might the video describe?","answer":"C","hint":"","options":{"A":"nonlinear vibration","B":"Damping vibration","C":"Harmonic vibration","D":"Forced vibration","E":"None of the above"},"choices":[],"video_id":"Mechanics_19","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What might the video describe?\nA. nonlinear vibration\nB. Damping vibration\nC. Harmonic vibration\nD. Forced vibration\nE. None of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_447","media":["validation_447_0.mp4"],"messages":[{"role":"user","question":"In a video context, the items displayed are legally considered **_______**.","answer":"invitation to treat","hint":"","options":{},"choices":[],"video_id":"Law_6","question_type":"open-ended","subject":"Law","prompt":"<video>In a video context, the items displayed are legally considered **_______**."}]},{"id":"validation_448","media":["validation_448_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements best describes the legal nature of the video protagonist's behavior under the principles of contract law?","answer":"A","hint":"","options":{"A":"The protagonist's call for bids is an **invitation to treat**, and each bid from the bidders is an **offer**.","B":"The protagonist's call for bids is an **offer**, and each bid from the bidders is an **acceptance**.","C":"The protagonist's starting price constitutes a **firm offer** that cannot be revoked.","D":"The protagonist's fall of the hammer signifies a **counter-offer** to the highest bid.","E":"The protagonist is **obligated to accept the highest bid** once bidding has started."},"choices":[],"video_id":"Law_6","question_type":"multiple-choice","subject":"Law","prompt":"<video>Which of the following statements best describes the legal nature of the video protagonist's behavior under the principles of contract law?\nA. The protagonist's call for bids is an **invitation to treat**, and each bid from the bidders is an **offer**.\nB. The protagonist's call for bids is an **offer**, and each bid from the bidders is an **acceptance**.\nC. The protagonist's starting price constitutes a **firm offer** that cannot be revoked.\nD. The protagonist's fall of the hammer signifies a **counter-offer** to the highest bid.\nE. The protagonist is **obligated to accept the highest bid** once bidding has started.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_449","media":["validation_449_0.mp4"],"messages":[{"role":"user","question":"The phenomenon described in the video may lead to severe neurological symptoms. To maintain homeostasis and prevent this condition, receptors in the ______ detect changes in the body and adjust hormone secretion accordingly.","answer":"hypothalamus","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_2","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The phenomenon described in the video may lead to severe neurological symptoms. To maintain homeostasis and prevent this condition, receptors in the ______ detect changes in the body and adjust hormone secretion accordingly."}]},{"id":"validation_45","media":["validation_45_0.mp4"],"messages":[{"role":"user","question":"From an economic perspective, given both classical and modern trade theories, which of the following is the most likely long-term effect on the countries shown in the video?","answer":"D","hint":"","options":{"A":"A decrease in overall consumer welfare resulting from trade diversion away from more efficient non-member producers.","B":"Reduction in intra-industry trade among member states as countries focus solely on their areas of absolute advantage.","C":"Standardization leading to a decrease in product diversity as member states eliminate overlapping industries.","D":"An increase in economies of scale and intensified competition, resulting in lower prices and greater product variety for consumers.","E":"Immediate harmonization of fiscal policies leading to the elimination of budget deficits among member states."},"choices":[],"video_id":"Economics_0","question_type":"multiple-choice","subject":"Economics","prompt":"<video>From an economic perspective, given both classical and modern trade theories, which of the following is the most likely long-term effect on the countries shown in the video?\nA. A decrease in overall consumer welfare resulting from trade diversion away from more efficient non-member producers.\nB. Reduction in intra-industry trade among member states as countries focus solely on their areas of absolute advantage.\nC. Standardization leading to a decrease in product diversity as member states eliminate overlapping industries.\nD. An increase in economies of scale and intensified competition, resulting in lower prices and greater product variety for consumers.\nE. Immediate harmonization of fiscal policies leading to the elimination of budget deficits among member states.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_450","media":["validation_450_0.mp4"],"messages":[{"role":"user","question":"When the phenomenon in the video occurs, which of the following options is the most important to adjust?","answer":"A","hint":"","options":{"A":"Renin-angiotensin system","B":"Hypothalamic-pituitary-thyroid axis","C":"Adrenaline and norepinephrine","D":"Melatonin secretion","E":"Kallikrein-kinin system"},"choices":[],"video_id":"Clinical_Medicine_2","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>When the phenomenon in the video occurs, which of the following options is the most important to adjust?\nA. Renin-angiotensin system\nB. Hypothalamic-pituitary-thyroid axis\nC. Adrenaline and norepinephrine\nD. Melatonin secretion\nE. Kallikrein-kinin system\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_451","media":["validation_451_0.mp4"],"messages":[{"role":"user","question":"Based on the phenomenon depicted in the video, which physiological adjustment is most critical to preventing further deterioration of the patient’s nervous system?","answer":"D","hint":"","options":{"A":"Activation of the renin-angiotensin-aldosterone system to increase sodium reabsorption","B":"Suppression of the hypothalamic-pituitary-thyroid axis to reduce metabolic rate","C":"Administration of adrenaline and norepinephrine to elevate blood pressure","D":"Decrease in vasopressin (antidiuretic hormone) secretion to promote water excretion","E":"Activation of the kallikrein-kinin system to promote vasodilation and reduce blood pressure"},"choices":[],"video_id":"Clinical_Medicine_2","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the phenomenon depicted in the video, which physiological adjustment is most critical to preventing further deterioration of the patient’s nervous system?\nA. Activation of the renin-angiotensin-aldosterone system to increase sodium reabsorption\nB. Suppression of the hypothalamic-pituitary-thyroid axis to reduce metabolic rate\nC. Administration of adrenaline and norepinephrine to elevate blood pressure\nD. Decrease in vasopressin (antidiuretic hormone) secretion to promote water excretion\nE. Activation of the kallikrein-kinin system to promote vasodilation and reduce blood pressure\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_452","media":["validation_452_0.mp4"],"messages":[{"role":"user","question":"Based on the physiological processes depicted in the video, which of the following pharmacological interventions is most appropriate?","answer":"C","hint":"","options":{"A":"Administration of thiazide diuretics to reduce sodium reabsorption in the distal tubule","B":"Administration of aldosterone antagonists to promote sodium excretion","C":"Administration of vasopressin receptor antagonists to induce water diuresis","D":"Administration of isotonic saline to replace lost electrolytes","E":"Administration of desmopressin to promote water reabsorption in the kidneys"},"choices":[],"video_id":"Clinical_Medicine_2","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the physiological processes depicted in the video, which of the following pharmacological interventions is most appropriate?\nA. Administration of thiazide diuretics to reduce sodium reabsorption in the distal tubule\nB. Administration of aldosterone antagonists to promote sodium excretion\nC. Administration of vasopressin receptor antagonists to induce water diuresis\nD. Administration of isotonic saline to replace lost electrolytes\nE. Administration of desmopressin to promote water reabsorption in the kidneys\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_453","media":["validation_453_0.mp4"],"messages":[{"role":"user","question":"The accumulation of substances in the arterial wall as shown in the video begins with injury to the **________** of the artery.","answer":"endothelium","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_10","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The accumulation of substances in the arterial wall as shown in the video begins with injury to the **________** of the artery."}]},{"id":"validation_454","media":["validation_454_0.mp4"],"messages":[{"role":"user","question":"If we put the first object and the fifth object together in front of the sixth object, which direction will the arrow point we see?","answer":"A","hint":"","options":{"A":"right","B":"up","C":"diagonally down-left","D":"down","E":"left"},"choices":[],"video_id":"Modern_Physics_5","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>If we put the first object and the fifth object together in front of the sixth object, which direction will the arrow point we see?\nA. right\nB. up\nC. diagonally down-left\nD. down\nE. left\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_455","media":["validation_455_0.mp4"],"messages":[{"role":"user","question":"Based on the objects shown in the video, you decide to conduct an experiment demonstrating an optical concept. Based on the experimental tools displayed in the video, which optical phenomenon is most likely to be demonstrated?","answer":"A","hint":"","options":{"A":"refraction","B":"reflection","C":"polarization","D":"interference","E":"diffraction"},"choices":[],"video_id":"Modern_Physics_5","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Based on the objects shown in the video, you decide to conduct an experiment demonstrating an optical concept. Based on the experimental tools displayed in the video, which optical phenomenon is most likely to be demonstrated?\nA. refraction\nB. reflection\nC. polarization\nD. interference\nE. diffraction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_456","media":["validation_456_0.mp4"],"messages":[{"role":"user","question":"The last process of the disease shown in the video is known as **_______**.","answer":"Cirrhosis","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_11","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The last process of the disease shown in the video is known as **_______**."}]},{"id":"validation_457","media":["validation_457_0.mp4"],"messages":[{"role":"user","question":"Fill in the blank: The joystick control used in the video is an example of a ________ that allows the operator to interact with the AGV.","answer":"human-machine interface","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_17","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>Fill in the blank: The joystick control used in the video is an example of a ________ that allows the operator to interact with the AGV."}]},{"id":"validation_458","media":["validation_458_0.mp4"],"messages":[{"role":"user","question":"Which of the following public health interventions is most effective in reducing the incidence of the disease shown in the video?","answer":"A","hint":"","options":{"A":"Implementing snail control programs to eliminate the intermediate host","B":"Distributing insecticide-treated bed nets to prevent vector bites","C":"Providing widespread vaccination against the parasite","D":"Promoting proper cooking of fish to eliminate larval forms","E":"Encouraging the use of personal protective equipment among fishermen"},"choices":[],"video_id":"Preventive_Medicine_8","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following public health interventions is most effective in reducing the incidence of the disease shown in the video?\nA. Implementing snail control programs to eliminate the intermediate host\nB. Distributing insecticide-treated bed nets to prevent vector bites\nC. Providing widespread vaccination against the parasite\nD. Promoting proper cooking of fish to eliminate larval forms\nE. Encouraging the use of personal protective equipment among fishermen\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_459","media":["validation_459_0.mp4"],"messages":[{"role":"user","question":"Which type of liver cirrhosis might the disease shown in the video cause?","answer":"C","hint":"","options":{"A":"Viral Cirrhosis","B":"Alcoholic Cirrhosis","C":"Symmers pipestem fibrosis","D":"Non-alcoholic Steatohepatitis (NASH)","E":"Cardiac Cirrhosis"},"choices":[],"video_id":"Preventive_Medicine_8","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which type of liver cirrhosis might the disease shown in the video cause?\nA. Viral Cirrhosis\nB. Alcoholic Cirrhosis\nC. Symmers pipestem fibrosis\nD. Non-alcoholic Steatohepatitis (NASH)\nE. Cardiac Cirrhosis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_46","media":["validation_46_0.mp4"],"messages":[{"role":"user","question":"How does the kinetic energy of the system in the video changes?","answer":"E","hint":"","options":{"A":"Larger","B":"Keep same","C":"Larger first, then smaller","D":"Smaller","E":"None of the above"},"choices":[],"video_id":"Mechanics_3","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How does the kinetic energy of the system in the video changes?\nA. Larger\nB. Keep same\nC. Larger first, then smaller\nD. Smaller\nE. None of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_460","media":["validation_460_0.mp4"],"messages":[{"role":"user","question":"Which of the following clinical findings is most likely to develop in chronically infected individuals in certain regions?","answer":"D","hint":"","options":{"A":"Microcytic anemia due to chronic intestinal blood loss","B":"Progressive muscle weakness leading to flaccid paralysis","C":"Hematuria and increased risk of bladder cancer","D":"Portal hypertension resulting from periportal fibrosis","E":"Malabsorption leading to steatorrhea and weight loss"},"choices":[],"video_id":"Preventive_Medicine_8","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following clinical findings is most likely to develop in chronically infected individuals in certain regions?\nA. Microcytic anemia due to chronic intestinal blood loss\nB. Progressive muscle weakness leading to flaccid paralysis\nC. Hematuria and increased risk of bladder cancer\nD. Portal hypertension resulting from periportal fibrosis\nE. Malabsorption leading to steatorrhea and weight loss\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_461","media":["validation_461_0.mp4"],"messages":[{"role":"user","question":"What ionic causes the color observed in the solution after the reaction?","answer":"Cu²⁺","hint":"","options":{},"choices":[],"video_id":"Chemistry_5","question_type":"open-ended","subject":"Chemistry","prompt":"<video>What ionic causes the color observed in the solution after the reaction?"}]},{"id":"validation_462","media":["validation_462_0.mp4"],"messages":[{"role":"user","question":"If the solution in the video is a salt solution, what is the most likely chemical reaction equation that would occur in the test tube?","answer":"B","hint":"","options":{"A":"Cu + Pb(NO3)2 → Cu(NO3)2 + Pb","B":"Cu + 2AgNO3 → Cu(NO3)2 + 2Ag","C":"Cu + FeSO4 → CuSO4 + Fe","D":"Cu(NO3)2 + Na2S → CuS + 2NaNO3","E":"CuCl2 + Na2SO4 → CuSO4 + 2NaCl"},"choices":[],"video_id":"Chemistry_5","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>If the solution in the video is a salt solution, what is the most likely chemical reaction equation that would occur in the test tube?\nA. Cu + Pb(NO3)2 → Cu(NO3)2 + Pb\nB. Cu + 2AgNO3 → Cu(NO3)2 + 2Ag\nC. Cu + FeSO4 → CuSO4 + Fe\nD. Cu(NO3)2 + Na2S → CuS + 2NaNO3\nE. CuCl2 + Na2SO4 → CuSO4 + 2NaCl\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_463","media":["validation_463_0.mp4"],"messages":[{"role":"user","question":"Which balanced chemical equation correctly represents the reaction occurring in the test tube?","answer":"B","hint":"","options":{"A":"Iron wire immersed in magnesium sulfate solution: Fe(s) + MgSO₄(aq) → FeSO₄(aq) + Mg(s)","B":"Copper wire immersed in silver nitrate solution: Cu(s) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)","C":"Silver wire immersed in copper(II) sulfate solution: Ag(s) + CuSO₄(aq) → Ag₂SO₄(aq) + Cu(s)","D":"Zinc wire immersed in sodium chloride solution: Zn(s) + 2NaCl(aq) → ZnCl₂(aq) + 2Na(s)","E":"Aluminum wire immersed in lead(II) nitrate solution: 2Al(s) + 3Pb(NO₃)₂(aq) → 2Al(NO₃)₃(aq) + 3Pb(s)"},"choices":[],"video_id":"Chemistry_5","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which balanced chemical equation correctly represents the reaction occurring in the test tube?\nA. Iron wire immersed in magnesium sulfate solution: Fe(s) + MgSO₄(aq) → FeSO₄(aq) + Mg(s)\nB. Copper wire immersed in silver nitrate solution: Cu(s) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)\nC. Silver wire immersed in copper(II) sulfate solution: Ag(s) + CuSO₄(aq) → Ag₂SO₄(aq) + Cu(s)\nD. Zinc wire immersed in sodium chloride solution: Zn(s) + 2NaCl(aq) → ZnCl₂(aq) + 2Na(s)\nE. Aluminum wire immersed in lead(II) nitrate solution: 2Al(s) + 3Pb(NO₃)₂(aq) → 2Al(NO₃)₃(aq) + 3Pb(s)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_464","media":["validation_464_0.mp4"],"messages":[{"role":"user","question":"In the extreme weather conditions shown in the video, the airplane can still fly safely. This phenomenon demonstrated in the video is due to the ______ effect.","answer":"Faraday cage","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_17","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the extreme weather conditions shown in the video, the airplane can still fly safely. This phenomenon demonstrated in the video is due to the ______ effect."}]},{"id":"validation_465","media":["validation_465_0.mp4"],"messages":[{"role":"user","question":"In the experiment shown in the video, the spin quantum number of the particle is ____.","answer":"1/2","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_6","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>In the experiment shown in the video, the spin quantum number of the particle is ____."}]},{"id":"validation_466","media":["validation_466_0.mp4"],"messages":[{"role":"user","question":"What is the difference number between the spin up and spin down electron?","answer":"C","hint":"","options":{"A":"3","B":"0","C":"1","D":"4","E":"2"},"choices":[],"video_id":"Modern_Physics_6","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>What is the difference number between the spin up and spin down electron?\nA. 3\nB. 0\nC. 1\nD. 4\nE. 2\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_467","media":["validation_467_0.mp4"],"messages":[{"role":"user","question":"In the experiment shown in the video, suppose the distance between the two rows of balls is s. If the speed of the balls v increases to sqrt(2) times the original speed, how will the distance between the two rows of balls, s’, change?","answer":"C","hint":"","options":{"A":"s' = s","B":"s' = s/2","C":"s' = s/sqrt{2}","D":"s' = 2s","E":"s' = s*sqrt{2}"},"choices":[],"video_id":"Modern_Physics_6","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>In the experiment shown in the video, suppose the distance between the two rows of balls is s. If the speed of the balls v increases to sqrt(2) times the original speed, how will the distance between the two rows of balls, s’, change?\nA. s' = s\nB. s' = s/2\nC. s' = s/sqrt{2}\nD. s' = 2s\nE. s' = s*sqrt{2}\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_468","media":["validation_468_0.mp4"],"messages":[{"role":"user","question":"What kind of len is best fit for the movie showed in the image","answer":"B","hint":"","options":{"A":"35mm f8","B":"35mm f1.8","C":"350mm f1.8","D":"300mm f8","E":"600mm f8"},"choices":[],"video_id":"Art_6","question_type":"multiple-choice","subject":"Art","prompt":"<video>What kind of len is best fit for the movie showed in the image\nA. 35mm f8\nB. 35mm f1.8\nC. 350mm f1.8\nD. 300mm f8\nE. 600mm f8\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_469","media":["validation_469_0.mp4"],"messages":[{"role":"user","question":"Based on the detailed description of the hotel lobby scene, which director's stylistic trademarks are most evident in this scene?","answer":"E","hint":"","options":{"A":"Stanley Kubrick","B":"Tim Burton","C":"Steven Spielberg","D":"Quentin Tarantino","E":"Wes Anderson"},"choices":[],"video_id":"Art_6","question_type":"multiple-choice","subject":"Art","prompt":"<video>Based on the detailed description of the hotel lobby scene, which director's stylistic trademarks are most evident in this scene?\nA. Stanley Kubrick\nB. Tim Burton\nC. Steven Spielberg\nD. Quentin Tarantino\nE. Wes Anderson\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_47","media":["validation_47_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes the net force acting on the block and the work done by this net force during the motion?","answer":"C","hint":"","options":{"A":"The net force on the block is zero, and no work is done on the block.","B":"The net force on the block is directed tangentially to the path, and work is done to maintain its constant speed.","C":"The net force on the block is directed toward the center of the circle, and no work is done on the block by this net force.","D":"The net force on the block is zero, and work is done on the block to keep it moving in a line.","E":"The net force on the block is toward the center of the circle, and work is done by the net force to maintain the circular motion."},"choices":[],"video_id":"Mechanics_3","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following statements correctly describes the net force acting on the block and the work done by this net force during the motion?\nA. The net force on the block is zero, and no work is done on the block.\nB. The net force on the block is directed tangentially to the path, and work is done to maintain its constant speed.\nC. The net force on the block is directed toward the center of the circle, and no work is done on the block by this net force.\nD. The net force on the block is zero, and work is done on the block to keep it moving in a line.\nE. The net force on the block is toward the center of the circle, and work is done by the net force to maintain the circular motion.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_470","media":["validation_470_0.mp4"],"messages":[{"role":"user","question":"During the implementation of the algorithm, after visiting node \"1\", the next node visited is node **___**.","answer":"4","hint":"","options":{},"choices":[],"video_id":"Computer_Science_21","question_type":"open-ended","subject":"Computer Science","prompt":"<video>During the implementation of the algorithm, after visiting node \"1\", the next node visited is node **___**."}]},{"id":"validation_471","media":["validation_471_0.mp4"],"messages":[{"role":"user","question":"What kind of search algorithm is used in the video of binary search tree?","answer":"E","hint":"","options":{"A":"sequential search","B":"iterative deepening search","C":"binary search","D":"breadth first search","E":"depth first search"},"choices":[],"video_id":"Computer_Science_21","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of search algorithm is used in the video of binary search tree?\nA. sequential search\nB. iterative deepening search\nC. binary search\nD. breadth first search\nE. depth first search\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_472","media":["validation_472_0.mp4"],"messages":[{"role":"user","question":"To efficiently implement the algorithm in the video, which of the following data structures is essential?","answer":"D","hint":"","options":{"A":"Stack","B":"Priority Queue","C":"Hash Table","D":"Queue","E":"Linked List"},"choices":[],"video_id":"Computer_Science_21","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>To efficiently implement the algorithm in the video, which of the following data structures is essential?\nA. Stack\nB. Priority Queue\nC. Hash Table\nD. Queue\nE. Linked List\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_473","media":["validation_473_0.mp4"],"messages":[{"role":"user","question":"Which traversal method is demonstrated in the video?","answer":"E","hint":"","options":{"A":"In-order traversal","B":"Post-order traversal","C":"Reverse in-order traversal","D":"Breadth-first traversal","E":"Pre-order traversal"},"choices":[],"video_id":"Computer_Science_21","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which traversal method is demonstrated in the video?\nA. In-order traversal\nB. Post-order traversal\nC. Reverse in-order traversal\nD. Breadth-first traversal\nE. Pre-order traversal\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_474","media":["validation_474_0.mp4"],"messages":[{"role":"user","question":"For the patient in the video, if the goal is detoxification and the restoration of normal function in the damaged structures, the most appropriate antidote is __________.","answer":"pralidoxime","hint":"","options":{},"choices":[],"video_id":"Pharmacy_14","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>For the patient in the video, if the goal is detoxification and the restoration of normal function in the damaged structures, the most appropriate antidote is __________."}]},{"id":"validation_475","media":["validation_475_0.mp4"],"messages":[{"role":"user","question":"Based on the content of the video, which of the following medications can be used for the emergency treatment of the symptoms exhibited by the individual in the video?","answer":"E","hint":"","options":{"A":"Hydrocortisone","B":"Diphenhydramine","C":"Loratadine","D":"Lorazepam","E":"Atropine"},"choices":[],"video_id":"Pharmacy_14","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the content of the video, which of the following medications can be used for the emergency treatment of the symptoms exhibited by the individual in the video?\nA. Hydrocortisone\nB. Diphenhydramine\nC. Loratadine\nD. Lorazepam\nE. Atropine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_476","media":["validation_476_0.mp4"],"messages":[{"role":"user","question":"Which of the following growth factors/cytokines is NOT involved in the process in the vedio?","answer":"C","hint":"","options":{"A":"EGF","B":"VEGF","C":"CD2AP","D":"IL-6","E":"PDGF"},"choices":[],"video_id":"Basic_Medicine_12","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following growth factors/cytokines is NOT involved in the process in the vedio?\nA. EGF\nB. VEGF\nC. CD2AP\nD. IL-6\nE. PDGF\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_477","media":["validation_477_0.mp4"],"messages":[{"role":"user","question":"According to McClelland's Needs Theory, the scenario in the video indicates a high need for **______**.","answer":"Affiliation","hint":"","options":{},"choices":[],"video_id":"Management_7","question_type":"open-ended","subject":"Management","prompt":"<video>According to McClelland's Needs Theory, the scenario in the video indicates a high need for **______**."}]},{"id":"validation_478","media":["validation_478_0.mp4"],"messages":[{"role":"user","question":"What is the bandwidth of the filter in the video? What is the wavelength range that the filter can pass through?","answer":"E","hint":"","options":{"A":"20Hz,50-70Hz","B":"250Hz,400-650Hz","C":"2Hz,5-7Hz","D":"150Hz,300-450Hz","E":"200Hz,500-700Hz"},"choices":[],"video_id":"Electrical_Engineering_18","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What is the bandwidth of the filter in the video? What is the wavelength range that the filter can pass through?\nA. 20Hz,50-70Hz\nB. 250Hz,400-650Hz\nC. 2Hz,5-7Hz\nD. 150Hz,300-450Hz\nE. 200Hz,500-700Hz\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_479","media":["validation_479_0.mp4"],"messages":[{"role":"user","question":"The video shows an animation of biological signals propagating through neurons. Between the two neurons (upper and lower one), the _______ neuron demonstrates more efficient action potential conduction.","answer":"lower","hint":"","options":{},"choices":[],"video_id":"Neurobiology_17","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The video shows an animation of biological signals propagating through neurons. Between the two neurons (upper and lower one), the _______ neuron demonstrates more efficient action potential conduction."}]},{"id":"validation_48","media":["validation_48_0.mp4"],"messages":[{"role":"user","question":"What biological process is shown in the video?","answer":"E","hint":"","options":{"A":"Biodegradation","B":"Community succession","C":"Genetic drift","D":"Migration of organism","E":"Species formation"},"choices":[],"video_id":"Biology_1","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What biological process is shown in the video?\nA. Biodegradation\nB. Community succession\nC. Genetic drift\nD. Migration of organism\nE. Species formation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_480","media":["validation_480_0.mp4"],"messages":[{"role":"user","question":"How does the action potential propagate along the axon of the left neuron in this video?","answer":"A","hint":"","options":{"A":"Saltatory conduction","B":"Segmental conduction","C":"Complex conduction","D":"Continuous conduction","E":"Passive conduction"},"choices":[],"video_id":"Neurobiology_17","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>How does the action potential propagate along the axon of the left neuron in this video?\nA. Saltatory conduction\nB. Segmental conduction\nC. Complex conduction\nD. Continuous conduction\nE. Passive conduction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_481","media":["validation_481_0.mp4"],"messages":[{"role":"user","question":"Under the seller's obligations, the contract is **(__________)** if the goods are subject to video before sale.","answer":"void","hint":"","options":{},"choices":[],"video_id":"Law_7","question_type":"open-ended","subject":"Law","prompt":"<video>Under the seller's obligations, the contract is **(__________)** if the goods are subject to video before sale."}]},{"id":"validation_482","media":["validation_482_0.mp4"],"messages":[{"role":"user","question":"Which of the following geographic factors most significantly contributed to the extent of inland flooding observed during the event?","answer":"A","hint":"","options":{"A":"The broad and low-lying coastal plains of the region, which allowed tsunami waves to travel far inland","B":"The steep mountainous terrain immediately adjacent to the coastline, which funneled waves into narrow valleys","C":"The dense urban infrastructure along the coast, which amplified the tsunami's wave energy","D":"The occurrence of the tsunami during high tide, increasing the overall sea level","E":"The location of the region within a sheltered bay, which concentrated the tsunami waves"},"choices":[],"video_id":"Geography_9","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Which of the following geographic factors most significantly contributed to the extent of inland flooding observed during the event?\nA. The broad and low-lying coastal plains of the region, which allowed tsunami waves to travel far inland\nB. The steep mountainous terrain immediately adjacent to the coastline, which funneled waves into narrow valleys\nC. The dense urban infrastructure along the coast, which amplified the tsunami's wave energy\nD. The occurrence of the tsunami during high tide, increasing the overall sea level\nE. The location of the region within a sheltered bay, which concentrated the tsunami waves\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_483","media":["validation_483_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why the grayscale area in the northeast corner of the map remained unchanged during the event?","answer":"C","hint":"","options":{"A":"The area was protected by a series of offshore barriers that absorbed the tsunami's energy before it reached the shore.","B":"The region was already submerged underwater before the tsunami, so no additional inundation was observed.","C":"The area consists of high-elevation mountainous terrain that was unaffected by the tsunami waves.","D":"The presence of dense vegetation in the area absorbed the impact of the tsunami, preventing flooding.","E":"The area is situated in a seismic shadow zone where tsunami waves are deflected away due to geological structures."},"choices":[],"video_id":"Geography_9","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Which of the following best explains why the grayscale area in the northeast corner of the map remained unchanged during the event?\nA. The area was protected by a series of offshore barriers that absorbed the tsunami's energy before it reached the shore.\nB. The region was already submerged underwater before the tsunami, so no additional inundation was observed.\nC. The area consists of high-elevation mountainous terrain that was unaffected by the tsunami waves.\nD. The presence of dense vegetation in the area absorbed the impact of the tsunami, preventing flooding.\nE. The area is situated in a seismic shadow zone where tsunami waves are deflected away due to geological structures.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_484","media":["validation_484_0.mp4"],"messages":[{"role":"user","question":"For the company shown in the video, what kind of risk should it pay special attention to when trading?","answer":"E","hint":"","options":{"A":"Translation risk","B":"Economic risk","C":"Supply chain risk","D":"Transaction risk","E":"All of the above"},"choices":[],"video_id":"Economics_5","question_type":"multiple-choice","subject":"Economics","prompt":"<video>For the company shown in the video, what kind of risk should it pay special attention to when trading?\nA. Translation risk\nB. Economic risk\nC. Supply chain risk\nD. Transaction risk\nE. All of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_485","media":["validation_485_0.mp4"],"messages":[{"role":"user","question":"The robot uses _______ degrees of freedom to complete the task.","answer":"four","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_18","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The robot uses _______ degrees of freedom to complete the task."}]},{"id":"validation_486","media":["validation_486_0.mp4"],"messages":[{"role":"user","question":"The total number of swap operations required to sort the sequence from the initial setting in the video is _____. (including the swaps not yet demonstrated in the video)","answer":"8","hint":"","options":{},"choices":[],"video_id":"Computer_Science_22","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The total number of swap operations required to sort the sequence from the initial setting in the video is _____. (including the swaps not yet demonstrated in the video)"}]},{"id":"validation_487","media":["validation_487_0.mp4"],"messages":[{"role":"user","question":"The test in the video activates the phenomenon of human reflexes caused by ______ nerves.","answer":"Oculomotor nerve","hint":"","options":{},"choices":[],"video_id":"Neurobiology_18","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The test in the video activates the phenomenon of human reflexes caused by ______ nerves."}]},{"id":"validation_488","media":["validation_488_0.mp4"],"messages":[{"role":"user","question":"In the described experiment, the rotation of the vanes is primarily caused by the thermal phenomenon known as **______**.","answer":"thermal radiation","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_4","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>In the described experiment, the rotation of the vanes is primarily caused by the thermal phenomenon known as **______**."}]},{"id":"validation_489","media":["validation_489_0.mp4"],"messages":[{"role":"user","question":"What kind of heat transfer phenomenon occurs in the video?","answer":"D","hint":"","options":{"A":"Thermal radiation. Heat is transferred from the paper to the outside world.","B":"Thermal convection. Heat is transferred from the outside to the paper.","C":"Heat conduction. Heat is transferred from the paper to the outside world.","D":"Thermal radiation. Heat is transferred from the outside to the paper.","E":"Thermal convection. Heat is transferred from the paper to the outside world."},"choices":[],"video_id":"Thermodynamics_4","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>What kind of heat transfer phenomenon occurs in the video?\nA. Thermal radiation. Heat is transferred from the paper to the outside world.\nB. Thermal convection. Heat is transferred from the outside to the paper.\nC. Heat conduction. Heat is transferred from the paper to the outside world.\nD. Thermal radiation. Heat is transferred from the outside to the paper.\nE. Thermal convection. Heat is transferred from the paper to the outside world.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_49","media":["validation_49_0.mp4"],"messages":[{"role":"user","question":"Based on the scenario presented in the video, this phenomenon will cause the labor demand curve in the relevant industry to shift to the ______.","answer":"left","hint":"","options":{},"choices":[],"video_id":"Economics_1","question_type":"open-ended","subject":"Economics","prompt":"<video>Based on the scenario presented in the video, this phenomenon will cause the labor demand curve in the relevant industry to shift to the ______."}]},{"id":"validation_490","media":["validation_490_0.mp4"],"messages":[{"role":"user","question":"In the video, what phenomenon would occur if the silver side of the blade is painted black?","answer":"A","hint":"","options":{"A":"The device will not rotate","B":"View from above, the device will rotate clockwise at a faster speed","C":"View from above, the device will rotate clockwise at a slower speed","D":"View from above, the device will rotate counterclockwise at a faster speed","E":"View from above, the device will rotate counterclockwise at a slower speed"},"choices":[],"video_id":"Thermodynamics_4","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>In the video, what phenomenon would occur if the silver side of the blade is painted black?\nA. The device will not rotate\nB. View from above, the device will rotate clockwise at a faster speed\nC. View from above, the device will rotate clockwise at a slower speed\nD. View from above, the device will rotate counterclockwise at a faster speed\nE. View from above, the device will rotate counterclockwise at a slower speed\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_491","media":["validation_491_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the phenomenon in the video?","answer":"E","hint":"","options":{"A":"The proximity of the metal rod induces opposite charges on the near side of the sphere, neutralizing its net charge locally, preventing further discharges.","B":"The metal rod causes a redistribution of charges on the sphere's surface, increasing the electric field between the rod and sphere, which ionizes the air and allows discharges.","C":"The presence of the metal rod increases the capacitance between the sphere and the rod, reducing the potential difference and preventing further discharges.","D":"Approaching the rod enhances electrostatic induction, which stops the charge flow on the sphere's surface, preventing further discharges.","E":"The metal rod introduces a path for charge to leave the sphere via corona discharge caused by the high electric field at the rod's tip, allowing discharges without direct contact."},"choices":[],"video_id":"Electromagnetism_22","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the phenomenon in the video?\nA. The proximity of the metal rod induces opposite charges on the near side of the sphere, neutralizing its net charge locally, preventing further discharges.\nB. The metal rod causes a redistribution of charges on the sphere's surface, increasing the electric field between the rod and sphere, which ionizes the air and allows discharges.\nC. The presence of the metal rod increases the capacitance between the sphere and the rod, reducing the potential difference and preventing further discharges.\nD. Approaching the rod enhances electrostatic induction, which stops the charge flow on the sphere's surface, preventing further discharges.\nE. The metal rod introduces a path for charge to leave the sphere via corona discharge caused by the high electric field at the rod's tip, allowing discharges without direct contact.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_492","media":["validation_492_0.mp4"],"messages":[{"role":"user","question":"How does the increment in the bead's velocity change with each collision with the next magnet?","answer":"B","hint":"","options":{"A":"The speed increment is the same each time.","B":"The speed increments get smaller and smaller each time.","C":"Each speed increment first increases and then decreases.","D":"The speed increments get bigger each time.","E":"Each speed increment first decreases and then increases."},"choices":[],"video_id":"Electrical_Engineering_19","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>How does the increment in the bead's velocity change with each collision with the next magnet?\nA. The speed increment is the same each time.\nB. The speed increments get smaller and smaller each time.\nC. Each speed increment first increases and then decreases.\nD. The speed increments get bigger each time.\nE. Each speed increment first decreases and then increases.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_493","media":["validation_493_0.mp4"],"messages":[{"role":"user","question":"Which of the following chemical reactions is most likely occurring when the solid is added to the solution in the video?","answer":"C","hint":"","options":{"A":"Ca+H2O->Ca(OH)2+H2","B":"Ba+H2O->Ba(OH)2+H2","C":"Na+H2O->NaOH+H2","D":"K+H2O->KOH+H2","E":"Mg+H2O->Mg(OH)2+H2"},"choices":[],"video_id":"Chemistry_6","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which of the following chemical reactions is most likely occurring when the solid is added to the solution in the video?\nA. Ca+H2O->Ca(OH)2+H2\nB. Ba+H2O->Ba(OH)2+H2\nC. Na+H2O->NaOH+H2\nD. K+H2O->KOH+H2\nE. Mg+H2O->Mg(OH)2+H2\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_494","media":["validation_494_0.mp4"],"messages":[{"role":"user","question":"Based on the observations described in the video, which of the following elements most likely corresponds to the substance added to the water?","answer":"A","hint":"","options":{"A":"Sodium (Na), an alkali metal in Group 1 with one valence electron","B":"Magnesium (Mg), an alkaline earth metal in Group 2 with two valence electrons","C":"Aluminum (Al), a post-transition metal in Group 13 with three valence electrons","D":"Carbon (C), a nonmetal in Group 14 with four valence electrons","E":"Chlorine (Cl), a halogen in Group 17 with seven valence electrons"},"choices":[],"video_id":"Chemistry_6","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Based on the observations described in the video, which of the following elements most likely corresponds to the substance added to the water?\nA. Sodium (Na), an alkali metal in Group 1 with one valence electron\nB. Magnesium (Mg), an alkaline earth metal in Group 2 with two valence electrons\nC. Aluminum (Al), a post-transition metal in Group 13 with three valence electrons\nD. Carbon (C), a nonmetal in Group 14 with four valence electrons\nE. Chlorine (Cl), a halogen in Group 17 with seven valence electrons\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_495","media":["validation_495_0.mp4"],"messages":[{"role":"user","question":"Which of the following operations or data structures is most accurately being depicted in the animation?","answer":"E","hint":"","options":{"A":"Insertion into an AVL Tree","B":"Breadth-First Search (BFS) traversal of a binary tree","C":"Construction of a Complete Binary Heap","D":"Depth-First Search (DFS) traversal of a binary tree","E":"Insertion into a Red-Black Tree"},"choices":[],"video_id":"Computer_Science_23","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following operations or data structures is most accurately being depicted in the animation?\nA. Insertion into an AVL Tree\nB. Breadth-First Search (BFS) traversal of a binary tree\nC. Construction of a Complete Binary Heap\nD. Depth-First Search (DFS) traversal of a binary tree\nE. Insertion into a Red-Black Tree\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_496","media":["validation_496_0.mp4"],"messages":[{"role":"user","question":"Which of the following properties does the resulting tree satisfy?","answer":"D","hint":"","options":{"A":"The tree is a complete binary tree.","B":"The tree is a perfect binary tree.","C":"The tree is a binary search tree.","D":"The tree is a red-black tree maintaining balanced black-heights.","E":"The tree is an AVL tree."},"choices":[],"video_id":"Computer_Science_23","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following properties does the resulting tree satisfy?\nA. The tree is a complete binary tree.\nB. The tree is a perfect binary tree.\nC. The tree is a binary search tree.\nD. The tree is a red-black tree maintaining balanced black-heights.\nE. The tree is an AVL tree.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_497","media":["validation_497_0.mp4"],"messages":[{"role":"user","question":"The type of motor most likely used at the top of the robot is a **________**.","answer":"stepper motor","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_19","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The type of motor most likely used at the top of the robot is a **________**."}]},{"id":"validation_498","media":["validation_498_0.mp4"],"messages":[{"role":"user","question":"What chemical process is reflected in the video?","answer":"D","hint":"","options":{"A":"Oxidative degradation","B":"Molecular chain polymerization","C":"Enzymatic degradation","D":"Hydrolysis","E":"Bulk degradation"},"choices":[],"video_id":"Biomedical_Engineering_10","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What chemical process is reflected in the video?\nA. Oxidative degradation\nB. Molecular chain polymerization\nC. Enzymatic degradation\nD. Hydrolysis\nE. Bulk degradation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_499","media":["validation_499_0.mp4"],"messages":[{"role":"user","question":"What is the most likely experiment the video is conducting","answer":"A","hint":"","options":{"A":"Angular momentum","B":"Linear momentum","C":"Acceleration","D":"Support force","E":"Gravity"},"choices":[],"video_id":"Mechanics_20","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What is the most likely experiment the video is conducting\nA. Angular momentum\nB. Linear momentum\nC. Acceleration\nD. Support force\nE. Gravity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_5","media":["validation_5_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following statements most accurately characterizes the mechanical behavior of the material tested?","answer":"B","hint":"","options":{"A":"The stress-strain curve shows nonlinear behavior before failure, indicating the onset of material yield.","B":"The material fails at the proportional limit, demonstrating brittle fracture with minimal energy absorption.","C":"The test indicates that the composite material undergoes significant necking before fracture, characteristic of ductile materials.","D":"The material fails due to yielding of the polymer matrix, leading to extensive fiber pull-out before fracture.","E":"The material displays viscoelastic properties, as evidenced by time-dependent deformation during the test."},"choices":[],"video_id":"Materials_Science_0","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Based on the video, which of the following statements most accurately characterizes the mechanical behavior of the material tested?\nA. The stress-strain curve shows nonlinear behavior before failure, indicating the onset of material yield.\nB. The material fails at the proportional limit, demonstrating brittle fracture with minimal energy absorption.\nC. The test indicates that the composite material undergoes significant necking before fracture, characteristic of ductile materials.\nD. The material fails due to yielding of the polymer matrix, leading to extensive fiber pull-out before fracture.\nE. The material displays viscoelastic properties, as evidenced by time-dependent deformation during the test.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_50","media":["validation_50_0.mp4"],"messages":[{"role":"user","question":"Which of the following market segmentation strategies is not used in the video?","answer":"D","hint":"","options":{"A":"Demographic segmentation targeting younger consumers","B":"Geographic segmentation focusing on local sellers","C":"Behavioral segmentation focusing on deal-seeking customers","D":"Mass marketing without segmentation","E":"Benefit segmentation emphasizing convenience"},"choices":[],"video_id":"Management_0","question_type":"multiple-choice","subject":"Management","prompt":"<video>Which of the following market segmentation strategies is not used in the video?\nA. Demographic segmentation targeting younger consumers\nB. Geographic segmentation focusing on local sellers\nC. Behavioral segmentation focusing on deal-seeking customers\nD. Mass marketing without segmentation\nE. Benefit segmentation emphasizing convenience\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_500","media":["validation_500_0.mp4"],"messages":[{"role":"user","question":"The rod in the video mainly carries ______ charge.","answer":"negative","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_23","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The rod in the video mainly carries ______ charge."}]},{"id":"validation_501","media":["validation_501_0.mp4"],"messages":[{"role":"user","question":"Based on the events shown in the video, to address potential issues, these companies formed a ______.","answer":"cartel","hint":"","options":{},"choices":[],"video_id":"Economics_6","question_type":"open-ended","subject":"Economics","prompt":"<video>Based on the events shown in the video, to address potential issues, these companies formed a ______."}]},{"id":"validation_502","media":["validation_502_0.mp4"],"messages":[{"role":"user","question":"What is WRONG about the shown disease?","answer":"E","hint":"","options":{"A":"Patients with type II have increased blood insulin in the early stage","B":"Patients with type II have normal to moderate decreased insulin in the late stage","C":"Patients with type I have normal weight","D":"Patients with type I often develop the disease in childhood","E":"Patients with type I have higher concordance in twins"},"choices":[],"video_id":"Basic_Medicine_13","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What is WRONG about the shown disease?\nA. Patients with type II have increased blood insulin in the early stage\nB. Patients with type II have normal to moderate decreased insulin in the late stage\nC. Patients with type I have normal weight\nD. Patients with type I often develop the disease in childhood\nE. Patients with type I have higher concordance in twins\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_503","media":["validation_503_0.mp4"],"messages":[{"role":"user","question":"What is not included in the auscultation area in the video?","answer":"A","hint":"","options":{"A":"aortic area","B":"pulmonary area","C":"left sternal border","D":"mitral area","E":"tricuspid area"},"choices":[],"video_id":"Clinical_Medicine_15","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What is not included in the auscultation area in the video?\nA. aortic area\nB. pulmonary area\nC. left sternal border\nD. mitral area\nE. tricuspid area\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_504","media":["validation_504_0.mp4"],"messages":[{"role":"user","question":"How does the doctor treat in the video?","answer":"B","hint":"","options":{"A":"Chemotherapy","B":"Implant Materials","C":"Medication","D":"Radiation therapy","E":"Photodynamic therapy"},"choices":[],"video_id":"Biomedical_Engineering_11","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>How does the doctor treat in the video?\nA. Chemotherapy\nB. Implant Materials\nC. Medication\nD. Radiation therapy\nE. Photodynamic therapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_505","media":["validation_505_0.mp4"],"messages":[{"role":"user","question":"The algorithm being demonstrated is _______________.","answer":"Bubble Sort","hint":"","options":{},"choices":[],"video_id":"Computer_Science_24","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm being demonstrated is _______________."}]},{"id":"validation_506","media":["validation_506_0.mp4"],"messages":[{"role":"user","question":"In the experiment described, the man is adjusting a **_____** to analyze the physical phenomenon.","answer":"spectrometer","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_7","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>In the experiment described, the man is adjusting a **_____** to analyze the physical phenomenon."}]},{"id":"validation_507","media":["validation_507_0.mp4"],"messages":[{"role":"user","question":"How does the wavelength of light we see changes when the operator changes the instrument?","answer":"A","hint":"","options":{"A":"Smaller first, then bigger","B":"Bigger","C":"Smaller","D":"Bigger first, then smaller","E":"No change"},"choices":[],"video_id":"Modern_Physics_7","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>How does the wavelength of light we see changes when the operator changes the instrument?\nA. Smaller first, then bigger\nB. Bigger\nC. Smaller\nD. Bigger first, then smaller\nE. No change\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_508","media":["validation_508_0.mp4"],"messages":[{"role":"user","question":"In the circuit described in the video, a certain variable is shown to be adjusted. Using the symbols and/or numbers displayed in the video, describe at what value of the adjusted variable ______ the current reaches its maximum.","answer":"\\frac{1}{\\sqrt{LC}}","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_20","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the circuit described in the video, a certain variable is shown to be adjusted. Using the symbols and/or numbers displayed in the video, describe at what value of the adjusted variable ______ the current reaches its maximum."}]},{"id":"validation_509","media":["validation_509_0.mp4"],"messages":[{"role":"user","question":"What kind of life science means is shown in the video?","answer":"E","hint":"","options":{"A":"Photodynamic therapy","B":"Ultrasonic therapy","C":"Radiation therapy","D":"Gene engineering","E":"Tissue Engineering"},"choices":[],"video_id":"Biomedical_Engineering_12","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of life science means is shown in the video?\nA. Photodynamic therapy\nB. Ultrasonic therapy\nC. Radiation therapy\nD. Gene engineering\nE. Tissue Engineering\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_51","media":["validation_51_0.mp4"],"messages":[{"role":"user","question":"Based on the various manifestations of the disease shown in the video, it is clear that the main symptom in its early stages is **_______**.","answer":"memory loss","hint":"","options":{},"choices":[],"video_id":"Neurobiology_2","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the various manifestations of the disease shown in the video, it is clear that the main symptom in its early stages is **_______**."}]},{"id":"validation_510","media":["validation_510_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following technologies is primarily being utilized?","answer":"C","hint":"","options":{"A":"Stem cell transplantation to replace damaged heart tissue","B":"Gene therapy using viral vectors to deliver functional genes","C":"Activation of regenerative genes using CRISPR activation (CRISPRa) technology","D":"Suppression of harmful genes using RNA interference (RNAi)","E":"Implantation of bioengineered tissue scaffolds to support heart tissue growth"},"choices":[],"video_id":"Biomedical_Engineering_12","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Based on the video, which of the following technologies is primarily being utilized?\nA. Stem cell transplantation to replace damaged heart tissue\nB. Gene therapy using viral vectors to deliver functional genes\nC. Activation of regenerative genes using CRISPR activation (CRISPRa) technology\nD. Suppression of harmful genes using RNA interference (RNAi)\nE. Implantation of bioengineered tissue scaffolds to support heart tissue growth\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_511","media":["validation_511_0.mp4"],"messages":[{"role":"user","question":"Which move motion shows that the orbits of planets are ellipses?","answer":"C","hint":"","options":{"A":"Only the Second one","B":"Only the First one","C":"The First and Third ones","D":"The First and Second ones","E":"Only the Third one"},"choices":[],"video_id":"Mechanics_21","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion shows that the orbits of planets are ellipses?\nA. Only the Second one\nB. Only the First one\nC. The First and Third ones\nD. The First and Second ones\nE. Only the Third one\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_512","media":["validation_512_0.mp4"],"messages":[{"role":"user","question":"The small particles drifted away are referred to as **_____**.","answer":"apoptotic bodies","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_14","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The small particles drifted away are referred to as **_____**."}]},{"id":"validation_513","media":["validation_513_0.mp4"],"messages":[{"role":"user","question":"What kind of cell death process is shown in the video?","answer":"D","hint":"","options":{"A":"Anoikis","B":"Necrosis","C":"Pyroptosis","D":"Apoptosis","E":"Autophagy"},"choices":[],"video_id":"Basic_Medicine_14","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What kind of cell death process is shown in the video?\nA. Anoikis\nB. Necrosis\nC. Pyroptosis\nD. Apoptosis\nE. Autophagy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_514","media":["validation_514_0.mp4"],"messages":[{"role":"user","question":"Which of the following molecular events is most likely responsible for initiating the process shown?","answer":"B","hint":"","options":{"A":"Activation of death receptors by Fas ligand (extrinsic apoptosis pathway)","B":"Release of cytochrome c from mitochondria activating intrinsic apoptosis pathway","C":"Activation of receptor-interacting protein kinases RIPK1 and RIPK3 inducing necroptosis","D":"Accumulation of autophagosomes due to Beclin-1 activation initiating autophagy","E":"Iron-dependent lipid peroxidation leading to ferroptosis"},"choices":[],"video_id":"Basic_Medicine_14","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following molecular events is most likely responsible for initiating the process shown?\nA. Activation of death receptors by Fas ligand (extrinsic apoptosis pathway)\nB. Release of cytochrome c from mitochondria activating intrinsic apoptosis pathway\nC. Activation of receptor-interacting protein kinases RIPK1 and RIPK3 inducing necroptosis\nD. Accumulation of autophagosomes due to Beclin-1 activation initiating autophagy\nE. Iron-dependent lipid peroxidation leading to ferroptosis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_515","media":["validation_515_0.mp4"],"messages":[{"role":"user","question":"The policy in video to improve economic efficiency is an example of which type of macroeconomic policy?","answer":"Supply-side policy","hint":"","options":{},"choices":[],"video_id":"Economics_7","question_type":"open-ended","subject":"Economics","prompt":"<video>The policy in video to improve economic efficiency is an example of which type of macroeconomic policy?"}]},{"id":"validation_516","media":["validation_516_0.mp4"],"messages":[{"role":"user","question":"Which of the following macroeconomic effects is most likely to occur in the medium term?","answer":"C","hint":"","options":{"A":"A decrease in overall labor productivity due to technological obsolescence.","B":"A reduction in capital investment as firms rely more on AI.","C":"An increase in total factor productivity leading to higher economic growth.","D":"A rise in inflation due to increased demand for AI-related services.","E":"A decrease in international competitiveness due to technological lag."},"choices":[],"video_id":"Economics_7","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following macroeconomic effects is most likely to occur in the medium term?\nA. A decrease in overall labor productivity due to technological obsolescence.\nB. A reduction in capital investment as firms rely more on AI.\nC. An increase in total factor productivity leading to higher economic growth.\nD. A rise in inflation due to increased demand for AI-related services.\nE. A decrease in international competitiveness due to technological lag.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_517","media":["validation_517_0.mp4"],"messages":[{"role":"user","question":"For the countries receiving these capital inflows shown in the video, these countries are collectively referred to by the acronym ______.","answer":"PIIGS","hint":"","options":{},"choices":[],"video_id":"Economics_8","question_type":"open-ended","subject":"Economics","prompt":"<video>For the countries receiving these capital inflows shown in the video, these countries are collectively referred to by the acronym ______."}]},{"id":"validation_518","media":["validation_518_0.mp4"],"messages":[{"role":"user","question":"What is the main reason for the debt crisis in the region as shown in the video?","answer":"C","hint":"","options":{"A":"Tight monetary policy suppresses consumption","B":"The rapid-growing economy and a fiscal surplus","C":"Uneven development among members and accumulated fiscal deficits","D":"The unified monetary system enhances policy coordination","E":"Reduced investment in infrastructure leading to economic stagnation"},"choices":[],"video_id":"Economics_8","question_type":"multiple-choice","subject":"Economics","prompt":"<video>What is the main reason for the debt crisis in the region as shown in the video?\nA. Tight monetary policy suppresses consumption\nB. The rapid-growing economy and a fiscal surplus\nC. Uneven development among members and accumulated fiscal deficits\nD. The unified monetary system enhances policy coordination\nE. Reduced investment in infrastructure leading to economic stagnation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_519","media":["validation_519_0.mp4"],"messages":[{"role":"user","question":"The cell type observed in the video is __________.","answer":"Fungi","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_13","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>The cell type observed in the video is __________."}]},{"id":"validation_52","media":["validation_52_0.mp4"],"messages":[{"role":"user","question":"What mechanical components are needed to achieve the actions in the video?","answer":"E","hint":"","options":{"A":"recirculating-ball","B":"rack-and-pinion","C":"worm-and-roller","D":"planetary gear set","E":"A, B, and C"},"choices":[],"video_id":"Mechanical_Engineering_2","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>What mechanical components are needed to achieve the actions in the video?\nA. recirculating-ball\nB. rack-and-pinion\nC. worm-and-roller\nD. planetary gear set\nE. A, B, and C\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_520","media":["validation_520_0.mp4"],"messages":[{"role":"user","question":"What life activities of microorganisms are reflected in the video?","answer":"D","hint":"","options":{"A":"Cell lysis","B":"Dormant","C":"Microbial evolution","D":"Fission and budding","E":"Spore formation"},"choices":[],"video_id":"Biomedical_Engineering_13","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What life activities of microorganisms are reflected in the video?\nA. Cell lysis\nB. Dormant\nC. Microbial evolution\nD. Fission and budding\nE. Spore formation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_521","media":["validation_521_0.mp4"],"messages":[{"role":"user","question":"Which microscopy technique is most likely being used, and how does this technique benefit Biomedical Engineering research?","answer":"D","hint":"","options":{"A":"Bright-field microscopy; it provides high-contrast images of stained specimens, aiding in cell morphology studies.","B":"Fluorescence microscopy; it allows for the visualization of specific cellular components using fluorescent tags, useful in genetic engineering.","C":"Electron microscopy; it offers detailed images of cellular ultrastructure, essential for nanotechnology applications.","D":"Phase-contrast microscopy; it enhances contrast in transparent specimens without staining, enabling the study of live cells in their natural state.","E":"Dark-field microscopy; it improves contrast of unstained samples by illuminating them against a dark background, useful for detecting motility."},"choices":[],"video_id":"Biomedical_Engineering_13","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which microscopy technique is most likely being used, and how does this technique benefit Biomedical Engineering research?\nA. Bright-field microscopy; it provides high-contrast images of stained specimens, aiding in cell morphology studies.\nB. Fluorescence microscopy; it allows for the visualization of specific cellular components using fluorescent tags, useful in genetic engineering.\nC. Electron microscopy; it offers detailed images of cellular ultrastructure, essential for nanotechnology applications.\nD. Phase-contrast microscopy; it enhances contrast in transparent specimens without staining, enabling the study of live cells in their natural state.\nE. Dark-field microscopy; it improves contrast of unstained samples by illuminating them against a dark background, useful for detecting motility.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_522","media":["validation_522_0.mp4"],"messages":[{"role":"user","question":" Which of the following explanations best describes the observed phenomenon?","answer":"E","hint":"","options":{"A":"The clear halos primarily result from endospore formation due to nutrient depletion, which can potentially be inhibited by targeting specific spore germination pathways.","B":"The halos are caused by extracellular polysaccharide capsule synthesis enhancing virulence, which can be disrupted by inhibiting capsule formation enzymes.","C":"The presence of distinct halos indicates lipid accumulation within cells due to metabolic shifts, which can be addressed by modifying lipid biosynthesis pathways.","D":"The halos signify biofilm matrix formation on surfaces, which can be prevented by using agents that disrupt key biofilm structural components.","E":"The halos are zones where secreted hydrolytic enzymes degrade the surrounding medium, a process that can be inhibited to prevent tissue invasion in antifungal therapy."},"choices":[],"video_id":"Biomedical_Engineering_13","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video> Which of the following explanations best describes the observed phenomenon?\nA. The clear halos primarily result from endospore formation due to nutrient depletion, which can potentially be inhibited by targeting specific spore germination pathways.\nB. The halos are caused by extracellular polysaccharide capsule synthesis enhancing virulence, which can be disrupted by inhibiting capsule formation enzymes.\nC. The presence of distinct halos indicates lipid accumulation within cells due to metabolic shifts, which can be addressed by modifying lipid biosynthesis pathways.\nD. The halos signify biofilm matrix formation on surfaces, which can be prevented by using agents that disrupt key biofilm structural components.\nE. The halos are zones where secreted hydrolytic enzymes degrade the surrounding medium, a process that can be inhibited to prevent tissue invasion in antifungal therapy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_523","media":["validation_523_0.mp4"],"messages":[{"role":"user","question":"Through the procedure shown in the video, the medical professional is performing a medical examination, which involves the stretching of the ________ muscle.","answer":"quadriceps","hint":"","options":{},"choices":[],"video_id":"Neurobiology_19","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Through the procedure shown in the video, the medical professional is performing a medical examination, which involves the stretching of the ________ muscle."}]},{"id":"validation_524","media":["validation_524_0.mp4"],"messages":[{"role":"user","question":"Where is the location of the cell bodies of the sensory neurons for the reflex in this video?","answer":"E","hint":"","options":{"A":"Basal ganglia","B":"Lateral geniculate nucleus","C":"Ventral horn","D":"Thalamus","E":"Dorsal root ganglia"},"choices":[],"video_id":"Neurobiology_19","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Where is the location of the cell bodies of the sensory neurons for the reflex in this video?\nA. Basal ganglia\nB. Lateral geniculate nucleus\nC. Ventral horn\nD. Thalamus\nE. Dorsal root ganglia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_525","media":["validation_525_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, the doctor conducted two experiments on the patient. In the first experiment, the patient’s response was normal; in the second experiment, the patient’s response was exaggerated. Based on the patient’s physiological signs, what is the most likely location of the lesion?","answer":"E","hint":"","options":{"A":"Right anterior horn cells at cervical and lumbar spinal cord levels","B":"Left lateral spinothalamic tract at thoracic spinal cord levels","C":"Left dorsal column nuclei in the medulla oblongata","D":"Left posterior limb of the internal capsule involving corticospinal and dorsal column pathways","E":"Right posterior limb of the internal capsule involving corticospinal and dorsal column pathways"},"choices":[],"video_id":"Neurobiology_19","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>As shown in the video, the doctor conducted two experiments on the patient. In the first experiment, the patient’s response was normal; in the second experiment, the patient’s response was exaggerated. Based on the patient’s physiological signs, what is the most likely location of the lesion?\nA. Right anterior horn cells at cervical and lumbar spinal cord levels\nB. Left lateral spinothalamic tract at thoracic spinal cord levels\nC. Left dorsal column nuclei in the medulla oblongata\nD. Left posterior limb of the internal capsule involving corticospinal and dorsal column pathways\nE. Right posterior limb of the internal capsule involving corticospinal and dorsal column pathways\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_526","media":["validation_526_0.mp4"],"messages":[{"role":"user","question":"In the biological process described in the video, assuming all neurons have a conduction velocity of 60 meters per second, each neuron’s axon length is 0.6 meters, and the synaptic delay is 0.5 milliseconds, what is the total time required for the nerve impulse to travel from the receptor to the effector (in milliseconds)?","answer":"C","hint":"","options":{"A":"100.5 ms","B":"10.5 ms","C":"20.5 ms","D":"31 ms","E":"41.5 ms"},"choices":[],"video_id":"Neurobiology_19","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>In the biological process described in the video, assuming all neurons have a conduction velocity of 60 meters per second, each neuron’s axon length is 0.6 meters, and the synaptic delay is 0.5 milliseconds, what is the total time required for the nerve impulse to travel from the receptor to the effector (in milliseconds)?\nA. 100.5 ms\nB. 10.5 ms\nC. 20.5 ms\nD. 31 ms\nE. 41.5 ms\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_527","media":["validation_527_0.mp4"],"messages":[{"role":"user","question":"According to the video, antibiotic-resistant infections cause over ___ deaths annually in the United States.","answer":"21000","hint":"","options":{},"choices":[],"video_id":"Pharmacy_15","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>According to the video, antibiotic-resistant infections cause over ___ deaths annually in the United States."}]},{"id":"validation_528","media":["validation_528_0.mp4"],"messages":[{"role":"user","question":"The phenomenon in the video inspires a type of verification method. Assuming the phenomenon shown in the video represents a codeword under this verification method, the number of information bits is __________.","answer":"16","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_12","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>The phenomenon in the video inspires a type of verification method. Assuming the phenomenon shown in the video represents a codeword under this verification method, the number of information bits is __________."}]},{"id":"validation_529","media":["validation_529_0.mp4"],"messages":[{"role":"user","question":"In the engineering project shown in the video, during the construction of the wall, the type of lateral earth pressure that must be considered is called the ________ earth pressure.","answer":"at-rest","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_15","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the engineering project shown in the video, during the construction of the wall, the type of lateral earth pressure that must be considered is called the ________ earth pressure."}]},{"id":"validation_53","media":["validation_53_0.mp4"],"messages":[{"role":"user","question":"Based on the video content, which of the following components is most critical for generating the torque feedback experienced by the user?","answer":"A","hint":"","options":{"A":"High-torque direct-drive electric motor","B":"Hydraulic power steering pump and piston assembly","C":"Pneumatic actuator with servo control system","D":"Mechanical rack-and-pinion steering mechanism","E":"Worm gear coupled with a sector gear"},"choices":[],"video_id":"Mechanical_Engineering_2","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Based on the video content, which of the following components is most critical for generating the torque feedback experienced by the user?\nA. High-torque direct-drive electric motor\nB. Hydraulic power steering pump and piston assembly\nC. Pneumatic actuator with servo control system\nD. Mechanical rack-and-pinion steering mechanism\nE. Worm gear coupled with a sector gear\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_530","media":["validation_530_0.mp4"],"messages":[{"role":"user","question":"The operation in the video is calculating the ________ of these numbers.","answer":"Greatest Common Divisor (GCD)","hint":"","options":{},"choices":[],"video_id":"Computer_Science_25","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The operation in the video is calculating the ________ of these numbers."}]},{"id":"validation_531","media":["validation_531_0.mp4"],"messages":[{"role":"user","question":"What is the type of thermodynamic process that occurs in the video (assuming the process is rapid and the system is independent)?","answer":"adiabatic","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_5","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>What is the type of thermodynamic process that occurs in the video (assuming the process is rapid and the system is independent)?"}]},{"id":"validation_532","media":["validation_532_0.mp4"],"messages":[{"role":"user","question":"Why did the piston position of the final tube drop compared to the initial position?","answer":"E","hint":"","options":{"A":"As the temperature decreases, the number of gas molecules remains unchanged, and ultimately the gas volume decreases.","B":"As the temperature decreases, the gas pressure decreases and ultimately the gas volume decreases.","C":"As the temperature remains unchanged, the number of gas molecules decreases, and ultimately the gas volume decreases.","D":"As the temperature decreases, the air pressure remains unchanged, and ultimately the gas volume decreases.","E":"As the temperature increases, the number of gas molecules decreases, and ultimately the gas volume decreases."},"choices":[],"video_id":"Thermodynamics_5","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Why did the piston position of the final tube drop compared to the initial position?\nA. As the temperature decreases, the number of gas molecules remains unchanged, and ultimately the gas volume decreases.\nB. As the temperature decreases, the gas pressure decreases and ultimately the gas volume decreases.\nC. As the temperature remains unchanged, the number of gas molecules decreases, and ultimately the gas volume decreases.\nD. As the temperature decreases, the air pressure remains unchanged, and ultimately the gas volume decreases.\nE. As the temperature increases, the number of gas molecules decreases, and ultimately the gas volume decreases.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_533","media":["validation_533_0.mp4"],"messages":[{"role":"user","question":"What is the phenomenon related to human eyes shown in the video?","answer":"persistence of vision","hint":"","options":{},"choices":[],"video_id":"Biology_4","question_type":"open-ended","subject":"Biology","prompt":"<video>What is the phenomenon related to human eyes shown in the video?"}]},{"id":"validation_534","media":["validation_534_0.mp4"],"messages":[{"role":"user","question":"The finished product in the video will most likely be used as the building's _______.","answer":"foundation","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_16","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>The finished product in the video will most likely be used as the building's _______."}]},{"id":"validation_535","media":["validation_535_0.mp4"],"messages":[{"role":"user","question":"The rotor of the stepper motor rotates in the ___________ direction.","answer":"Clockwise","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_20","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The rotor of the stepper motor rotates in the ___________ direction."}]},{"id":"validation_536","media":["validation_536_0.mp4"],"messages":[{"role":"user","question":"What energy conversion process occurs in the video?","answer":"D","hint":"","options":{"A":"No electrical energy is produced when the strings are plucked.","B":"All the mechanical energy generated by plucking the strings is converted into heat energy.","C":"Thermal energy in the air is converted into electrical energy.","D":"Electrical energy from the electric guitar speaker is converted into sound energy.","E":"The mechanical energy generated by plucking the strings is converted into sound energy and heat energy."},"choices":[],"video_id":"Electrical_Engineering_21","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What energy conversion process occurs in the video?\nA. No electrical energy is produced when the strings are plucked.\nB. All the mechanical energy generated by plucking the strings is converted into heat energy.\nC. Thermal energy in the air is converted into electrical energy.\nD. Electrical energy from the electric guitar speaker is converted into sound energy.\nE. The mechanical energy generated by plucking the strings is converted into sound energy and heat energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_537","media":["validation_537_0.mp4"],"messages":[{"role":"user","question":"How many degrees of freedom are involved in the process of automated fiber bundle manufacturing?","answer":"B","hint":"","options":{"A":"Four","B":"Six","C":"Five","D":"Seven","E":"Eight"},"choices":[],"video_id":"Materials_Science_7","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>How many degrees of freedom are involved in the process of automated fiber bundle manufacturing?\nA. Four\nB. Six\nC. Five\nD. Seven\nE. Eight\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_538","media":["validation_538_0.mp4"],"messages":[{"role":"user","question":"Based on the described manufacturing process, which of the following is the most critical challenge to address in order to produce high-quality fiber-reinforced composite materials using this method?","answer":"B","hint":"","options":{"A":"Ensuring exact alignment of fibers to prevent anisotropic properties","B":"Achieving complete impregnation of fibers with the matrix material to avoid voids","C":"Preventing thermal degradation of fibers due to excessive heat during processing","D":"Minimizing residual stresses by controlling cooling rates after deposition","E":"Reducing lead times by increasing the speed of the robotic arm movements"},"choices":[],"video_id":"Materials_Science_7","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Based on the described manufacturing process, which of the following is the most critical challenge to address in order to produce high-quality fiber-reinforced composite materials using this method?\nA. Ensuring exact alignment of fibers to prevent anisotropic properties\nB. Achieving complete impregnation of fibers with the matrix material to avoid voids\nC. Preventing thermal degradation of fibers due to excessive heat during processing\nD. Minimizing residual stresses by controlling cooling rates after deposition\nE. Reducing lead times by increasing the speed of the robotic arm movements\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_539","media":["validation_539_0.mp4"],"messages":[{"role":"user","question":"While filling the water-filled ditch, the workers must consider the increase in **___**, which reduces the soil's shear strength.","answer":"pore water pressure","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_17","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>While filling the water-filled ditch, the workers must consider the increase in **___**, which reduces the soil's shear strength."}]},{"id":"validation_54","media":["validation_54_0.mp4"],"messages":[{"role":"user","question":"Which of the following control methods is most appropriate for the steering wheel's force-feedback system in the video?","answer":"B","hint":"","options":{"A":"Open-loop control utilizing pre-defined torque outputs without feedback.","B":"Proportional-Integral-Derivative control (PID control) incorporating feedback from multiple sensors for torque, steering angle, and vehicle dynamics.","C":"On-off control (bang-bang control) toggling between maximum and zero torque outputs.","D":"Feedforward control relying entirely on predictive models without sensor feedback.","E":"Deadbeat control that aims for system response to reach the desired state in minimal steps without considering stability."},"choices":[],"video_id":"Mechanical_Engineering_2","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following control methods is most appropriate for the steering wheel's force-feedback system in the video?\nA. Open-loop control utilizing pre-defined torque outputs without feedback.\nB. Proportional-Integral-Derivative control (PID control) incorporating feedback from multiple sensors for torque, steering angle, and vehicle dynamics.\nC. On-off control (bang-bang control) toggling between maximum and zero torque outputs.\nD. Feedforward control relying entirely on predictive models without sensor feedback.\nE. Deadbeat control that aims for system response to reach the desired state in minimal steps without considering stability.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_540","media":["validation_540_0.mp4"],"messages":[{"role":"user","question":"The total weight of the minimum spanning tree formed using the demonstrated algorithm is ____.","answer":"26","hint":"","options":{},"choices":[],"video_id":"Computer_Science_26","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The total weight of the minimum spanning tree formed using the demonstrated algorithm is ____."}]},{"id":"validation_541","media":["validation_541_0.mp4"],"messages":[{"role":"user","question":"The man's allergic reaction is mediated by immunoglobulin **_____**.","answer":"E","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_16","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The man's allergic reaction is mediated by immunoglobulin **_____**."}]},{"id":"validation_542","media":["validation_542_0.mp4"],"messages":[{"role":"user","question":"What other symptoms might the person in the video have?","answer":"B","hint":"","options":{"A":"Gastrointestinal bleeding","B":"Rhinitis and asthma","C":"Dermatitis herpetiformis","D":"Migraine headaches","E":"Diabetes"},"choices":[],"video_id":"Clinical_Medicine_16","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What other symptoms might the person in the video have?\nA. Gastrointestinal bleeding\nB. Rhinitis and asthma\nC. Dermatitis herpetiformis\nD. Migraine headaches\nE. Diabetes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_543","media":["validation_543_0.mp4"],"messages":[{"role":"user","question":"Based on the symptoms shown in the video, which immune mechanism is most likely responsible for the man’s symptoms?","answer":"D","hint":"","options":{"A":"Type II hypersensitivity reaction involving IgG antibodies targeting cell surface antigens","B":"Type III hypersensitivity reaction due to immune complex deposition in vessel walls","C":"Type IV hypersensitivity reaction mediated by sensitized T-helper 1 (Th1) lymphocytes","D":"Type I hypersensitivity reaction mediated by IgE antibodies causing mast cell degranulation","E":"Autoimmune response involving IgG antibodies against desmoglein proteins in the skin"},"choices":[],"video_id":"Clinical_Medicine_16","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the symptoms shown in the video, which immune mechanism is most likely responsible for the man’s symptoms?\nA. Type II hypersensitivity reaction involving IgG antibodies targeting cell surface antigens\nB. Type III hypersensitivity reaction due to immune complex deposition in vessel walls\nC. Type IV hypersensitivity reaction mediated by sensitized T-helper 1 (Th1) lymphocytes\nD. Type I hypersensitivity reaction mediated by IgE antibodies causing mast cell degranulation\nE. Autoimmune response involving IgG antibodies against desmoglein proteins in the skin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_544","media":["validation_544_0.mp4"],"messages":[{"role":"user","question":"In the video, the “purple” biomolecule that binds to the “yellow” biomolecule is  _____","answer":"sialyl-Lewis X","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_17","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the video, the “purple” biomolecule that binds to the “yellow” biomolecule is  _____"}]},{"id":"validation_545","media":["validation_545_0.mp4"],"messages":[{"role":"user","question":"The linguist in this video is the very first who came up with this theory ,who is he?","answer":"A","hint":"","options":{"A":"Benjamin Whorf","B":"Noam Chomsky","C":"Eric Lenneberg","D":"Roman Jakobson","E":"Ferdinand de Saussure"},"choices":[],"video_id":"Literature_4","question_type":"multiple-choice","subject":"Literature","prompt":"<video>The linguist in this video is the very first who came up with this theory ,who is he?\nA. Benjamin Whorf\nB. Noam Chomsky\nC. Eric Lenneberg\nD. Roman Jakobson\nE. Ferdinand de Saussure\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_546","media":["validation_546_0.mp4"],"messages":[{"role":"user","question":"Based on the video's depiction, which of the following literary works best exemplifies the theme?","answer":"A","hint":"","options":{"A":"George Orwell's '1984'","B":"James Joyce's 'Ulysses'","C":"T.S. Eliot's 'The Waste Land'","D":"Franz Kafka's 'The Metamorphosis'","E":"Virginia Woolf's 'To the Lighthouse'"},"choices":[],"video_id":"Literature_4","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the video's depiction, which of the following literary works best exemplifies the theme?\nA. George Orwell's '1984'\nB. James Joyce's 'Ulysses'\nC. T.S. Eliot's 'The Waste Land'\nD. Franz Kafka's 'The Metamorphosis'\nE. Virginia Woolf's 'To the Lighthouse'\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_547","media":["validation_547_0.mp4"],"messages":[{"role":"user","question":"When the process shown in the video occurs, there are multiple genetic mutations at specific sites, what is their order?","answer":"E","hint":"","options":{"A":"p53, p16, K-RAS","B":"p53, K-RAS, p16","C":"p16, K-RAS, p53","D":"K-RAS, p53, p16","E":"K-RAS, p16, p53"},"choices":[],"video_id":"Basic_Medicine_15","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>When the process shown in the video occurs, there are multiple genetic mutations at specific sites, what is their order?\nA. p53, p16, K-RAS\nB. p53, K-RAS, p16\nC. p16, K-RAS, p53\nD. K-RAS, p53, p16\nE. K-RAS, p16, p53\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_548","media":["validation_548_0.mp4"],"messages":[{"role":"user","question":"The shortest distance from node 'a' to node 'h' is ___.","answer":"5","hint":"","options":{},"choices":[],"video_id":"Computer_Science_27","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The shortest distance from node 'a' to node 'h' is ___."}]},{"id":"validation_549","media":["validation_549_0.mp4"],"messages":[{"role":"user","question":"What algorithm is being illustrated?","answer":"Depth-first search","hint":"","options":{},"choices":[],"video_id":"Computer_Science_28","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What algorithm is being illustrated?"}]},{"id":"validation_55","media":["validation_55_0.mp4"],"messages":[{"role":"user","question":"In the video, the phone is placed into a framework, which acts as a _________.","answer":"Faraday Cage","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_5","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the video, the phone is placed into a framework, which acts as a _________."}]},{"id":"validation_550","media":["validation_550_0.mp4"],"messages":[{"role":"user","question":"The economic crisis described is **______**.","answer":"hyperinflation","hint":"","options":{},"choices":[],"video_id":"Economics_9","question_type":"open-ended","subject":"Economics","prompt":"<video>The economic crisis described is **______**."}]},{"id":"validation_551","media":["validation_551_0.mp4"],"messages":[{"role":"user","question":"How does the angular velocity of the man in the video change?","answer":"C","hint":"","options":{"A":"Increases and remains increased","B":"Decreases and remains decreased","C":"Increases first, then decreases","D":"Decreases first, then increases","E":"Remains the same"},"choices":[],"video_id":"Mechanics_22","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How does the angular velocity of the man in the video change?\nA. Increases and remains increased\nB. Decreases and remains decreased\nC. Increases first, then decreases\nD. Decreases first, then increases\nE. Remains the same\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_552","media":["validation_552_0.mp4"],"messages":[{"role":"user","question":"What is his new angular velocity ( omega_f ) in terms of ( I_0 ), ( m ), ( L ), and ( omega_0 )?","answer":"B","hint":"","options":{"A":"( omega_f = omega_0 )","B":"( omega_f = dfrac{I_0}{I_0 + 2mL^2} omega_0 )","C":"( omega_f = dfrac{I_0 + 2mL^2}{I_0} omega_0 )","D":"( omega_f = dfrac{I_0 + mL^2}{I_0 + 2mL^2} omega_0 )","E":"( omega_f = dfrac{I_0}{I_0 + mL^2} omega_0 )"},"choices":[],"video_id":"Mechanics_22","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What is his new angular velocity ( omega_f ) in terms of ( I_0 ), ( m ), ( L ), and ( omega_0 )?\nA. ( omega_f = omega_0 )\nB. ( omega_f = dfrac{I_0}{I_0 + 2mL^2} omega_0 )\nC. ( omega_f = dfrac{I_0 + 2mL^2}{I_0} omega_0 )\nD. ( omega_f = dfrac{I_0 + mL^2}{I_0 + 2mL^2} omega_0 )\nE. ( omega_f = dfrac{I_0}{I_0 + mL^2} omega_0 )\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_553","media":["validation_553_0.mp4"],"messages":[{"role":"user","question":"The total number of bits used to encode 'MR PETER' is **___** (ignore the space).","answer":"17 bits","hint":"","options":{},"choices":[],"video_id":"Computer_Science_29","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The total number of bits used to encode 'MR PETER' is **___** (ignore the space)."}]},{"id":"validation_554","media":["validation_554_0.mp4"],"messages":[{"role":"user","question":"Why does the iron block in the video rise?","answer":"D","hint":"","options":{"A":"When the button is pressed, air flow is generated, and the air pressure causes the iron block to move upward.","B":"After pressing the button, there is a mechanical device that pulls the iron block upward.","C":"When the button is pressed, a magnetic field is formed, and the iron block moves upward due to the magnetic force.","D":"After pressing the button, an electric current is generated to generate heat. The rope is heat-shrinkable and shortens to pull the iron block upward.","E":"After pressing the button, a magnetic field is generated, and the rope is pulled by the force of the magnetic field to move the iron block."},"choices":[],"video_id":"Thermodynamics_6","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Why does the iron block in the video rise?\nA. When the button is pressed, air flow is generated, and the air pressure causes the iron block to move upward.\nB. After pressing the button, there is a mechanical device that pulls the iron block upward.\nC. When the button is pressed, a magnetic field is formed, and the iron block moves upward due to the magnetic force.\nD. After pressing the button, an electric current is generated to generate heat. The rope is heat-shrinkable and shortens to pull the iron block upward.\nE. After pressing the button, a magnetic field is generated, and the rope is pulled by the force of the magnetic field to move the iron block.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_555","media":["validation_555_0.mp4"],"messages":[{"role":"user","question":"Which of the following thermodynamic explanations best describes the phenomenon shown in the video?","answer":"C","hint":"","options":{"A":"Heating the wire increases its entropy, causing the atoms to move more randomly and the wire to contract.","B":"The electric current generates a magnetic field around the wire, and the interaction with the metal block induces a lifting force.","C":"The wire undergoes a phase transition from martensite to austenite upon heating, releasing stored strain energy and contracting, thereby lifting the block.","D":"Heating causes the gas inside the glass tube to expand, thereby lowers the metal block.","E":"Heating causes the gas inside the glass tube to expand, thereby lifting the metal block."},"choices":[],"video_id":"Thermodynamics_6","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following thermodynamic explanations best describes the phenomenon shown in the video?\nA. Heating the wire increases its entropy, causing the atoms to move more randomly and the wire to contract.\nB. The electric current generates a magnetic field around the wire, and the interaction with the metal block induces a lifting force.\nC. The wire undergoes a phase transition from martensite to austenite upon heating, releasing stored strain energy and contracting, thereby lifting the block.\nD. Heating causes the gas inside the glass tube to expand, thereby lowers the metal block.\nE. Heating causes the gas inside the glass tube to expand, thereby lifting the metal block.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_556","media":["validation_556_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the character is most likely exhibiting symptoms of ______ disorder.","answer":"generalized anxiety disorder","hint":"","options":{},"choices":[],"video_id":"Neurobiology_20","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the video, the character is most likely exhibiting symptoms of ______ disorder."}]},{"id":"validation_557","media":["validation_557_0.mp4"],"messages":[{"role":"user","question":"Based on the symptoms depicted in the video, what is the most likely underlying condition causing the initial insomnia?","answer":"anxiety","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_18","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the symptoms depicted in the video, what is the most likely underlying condition causing the initial insomnia?"}]},{"id":"validation_558","media":["validation_558_0.mp4"],"messages":[{"role":"user","question":"What phenomenon is shown in the video?","answer":"C","hint":"","options":{"A":"Late insomnia","B":"Middle insomnia","C":"Initial insomnia","D":"Sleep onset latency","E":"Delayed sleep phase syndrome"},"choices":[],"video_id":"Clinical_Medicine_18","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What phenomenon is shown in the video?\nA. Late insomnia\nB. Middle insomnia\nC. Initial insomnia\nD. Sleep onset latency\nE. Delayed sleep phase syndrome\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_559","media":["validation_559_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, which physical symptom is this person most likely experiencing?","answer":"B","hint":"","options":{"A":"Recurrent nightmares involving traumatic events","B":"Persistent muscle tension and restlessness","C":"Significant weight loss without dieting","D":"Compulsive behaviors like repeated checking","E":"Elevated mood with increased goal-directed activity"},"choices":[],"video_id":"Clinical_Medicine_18","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>As shown in the video, which physical symptom is this person most likely experiencing?\nA. Recurrent nightmares involving traumatic events\nB. Persistent muscle tension and restlessness\nC. Significant weight loss without dieting\nD. Compulsive behaviors like repeated checking\nE. Elevated mood with increased goal-directed activity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_56","media":["validation_56_0.mp4"],"messages":[{"role":"user","question":"Why is the electromagnetic wave intensity measured the second time weaker than the first time?","answer":"B","hint":"","options":{"A":"The second time the mobile phone activity was different, the electromagnetic waves emitted were of low power.","B":"The second time the mobile phone was placed in the barbed wire fence, the spread of electromagnetic waves was hindered.","C":"The second time, the mobile phone was further away from the measuring device, and the electromagnetic wave signal received by the measuring device was poor.","D":"The second measurement device was placed in a damp environment, blocking the reception of electromagnetic waves.","E":"The second measurement device was not reset to zero, resulting in an error."},"choices":[],"video_id":"Electromagnetism_5","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why is the electromagnetic wave intensity measured the second time weaker than the first time?\nA. The second time the mobile phone activity was different, the electromagnetic waves emitted were of low power.\nB. The second time the mobile phone was placed in the barbed wire fence, the spread of electromagnetic waves was hindered.\nC. The second time, the mobile phone was further away from the measuring device, and the electromagnetic wave signal received by the measuring device was poor.\nD. The second measurement device was placed in a damp environment, blocking the reception of electromagnetic waves.\nE. The second measurement device was not reset to zero, resulting in an error.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_560","media":["validation_560_0.mp4"],"messages":[{"role":"user","question":"Based on the video depiction, which of the following is the most likely diagnosis for this individual's condition?","answer":"E","hint":"","options":{"A":"Major Depressive Disorder","B":"Obsessive-Compulsive Disorder","C":"Acute Stress Disorder","D":"Adjustment Disorder","E":"Generalized Anxiety Disorder"},"choices":[],"video_id":"Clinical_Medicine_18","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the video depiction, which of the following is the most likely diagnosis for this individual's condition?\nA. Major Depressive Disorder\nB. Obsessive-Compulsive Disorder\nC. Acute Stress Disorder\nD. Adjustment Disorder\nE. Generalized Anxiety Disorder\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_561","media":["validation_561_0.mp4"],"messages":[{"role":"user","question":"The circuit demonstrated in the video is known as a(n) **____** circuit.","answer":"RC","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_24","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The circuit demonstrated in the video is known as a(n) **____** circuit."}]},{"id":"validation_562","media":["validation_562_0.mp4"],"messages":[{"role":"user","question":"Why does the light bulb flicker in the video?","answer":"C","hint":"","options":{"A":"The capacitor supplies power to the light bulb, and the circuit is now connected.","B":"The power supply supplies power to the light bulb, and the circuit is now a path.","C":"The power supply supplies power to the light bulb, and the capacitor is in a charged state.","D":"The power source and the capacitor simultaneously power the light bulb.","E":"The capacitor supplies power to the light bulb, and the capacitor is in a discharged state."},"choices":[],"video_id":"Electromagnetism_24","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why does the light bulb flicker in the video?\nA. The capacitor supplies power to the light bulb, and the circuit is now connected.\nB. The power supply supplies power to the light bulb, and the circuit is now a path.\nC. The power supply supplies power to the light bulb, and the capacitor is in a charged state.\nD. The power source and the capacitor simultaneously power the light bulb.\nE. The capacitor supplies power to the light bulb, and the capacitor is in a discharged state.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_563","media":["validation_563_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the behavior observed in the circuit?","answer":"B","hint":"","options":{"A":"The capacitor charges instantaneously when the switch is closed, and the light bulb operates independently from the capacitor.","B":"The capacitor charges through the light bulb, which acts as a resistor, causing a gradual increase in voltage across the capacitor while the bulb lights up then goes out during the charging process.","C":"The capacitor discharges through the light bulb when the switch is closed, resulting in a decreasing voltage across the capacitor and causing the bulb to light up due to the discharge current.","D":"The capacitor and the light bulb are connected in parallel, and the capacitor charges directly from the battery without affecting the light bulb's operation.","E":"The capacitor charges when the switch is opened due to a sudden change in the magnetic field, and the light bulb lights up because of transient currents in the circuit."},"choices":[],"video_id":"Electromagnetism_24","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the behavior observed in the circuit?\nA. The capacitor charges instantaneously when the switch is closed, and the light bulb operates independently from the capacitor.\nB. The capacitor charges through the light bulb, which acts as a resistor, causing a gradual increase in voltage across the capacitor while the bulb lights up then goes out during the charging process.\nC. The capacitor discharges through the light bulb when the switch is closed, resulting in a decreasing voltage across the capacitor and causing the bulb to light up due to the discharge current.\nD. The capacitor and the light bulb are connected in parallel, and the capacitor charges directly from the battery without affecting the light bulb's operation.\nE. The capacitor charges when the switch is opened due to a sudden change in the magnetic field, and the light bulb lights up because of transient currents in the circuit.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_564","media":["validation_564_0.mp4"],"messages":[{"role":"user","question":"Based on the scenario in the video, they are primarily utilizing the **________** channel of management communication.","answer":"informal","hint":"","options":{},"choices":[],"video_id":"Management_8","question_type":"open-ended","subject":"Management","prompt":"<video>Based on the scenario in the video, they are primarily utilizing the **________** channel of management communication."}]},{"id":"validation_565","media":["validation_565_0.mp4"],"messages":[{"role":"user","question":"How many degrees of freedom are there in the NDT process?","answer":"B","hint":"","options":{"A":"Nine","B":"Seven","C":"Six","D":"Eight","E":"Five"},"choices":[],"video_id":"Materials_Science_8","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>How many degrees of freedom are there in the NDT process?\nA. Nine\nB. Seven\nC. Six\nD. Eight\nE. Five\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_566","media":["validation_566_0.mp4"],"messages":[{"role":"user","question":"The worst-case performance of the shown algorithm is O(_______).","answer":"n log n","hint":"","options":{},"choices":[],"video_id":"Computer_Science_30","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The worst-case performance of the shown algorithm is O(_______)."}]},{"id":"validation_567","media":["validation_567_0.mp4"],"messages":[{"role":"user","question":"What kind of sorting algorithm is used in this video?","answer":"A","hint":"","options":{"A":"Heap sort","B":"Quick sort","C":"Merge sort","D":"Shell sort","E":"Insertion sort"},"choices":[],"video_id":"Computer_Science_30","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of sorting algorithm is used in this video?\nA. Heap sort\nB. Quick sort\nC. Merge sort\nD. Shell sort\nE. Insertion sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_568","media":["validation_568_0.mp4"],"messages":[{"role":"user","question":"Based on the behavior of the algorithm as depicted in the video, which of the following statements about the algorithm is true?","answer":"E","hint":"","options":{"A":"The algorithm is a stable sorting algorithm, preserving the relative order of equal elements.","B":"The algorithm has a worst-case time complexity worse than O(n log n) due to its reliance on heap construction.","C":"The algorithm requires additional memory proportional to the input size, resulting in O(n) extra space complexity.","D":"The algorithm's performance significantly improves when the input array is nearly sorted.","E":"The algorithm's performance is largely unaffected by the initial order of the elements in the array."},"choices":[],"video_id":"Computer_Science_30","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Based on the behavior of the algorithm as depicted in the video, which of the following statements about the algorithm is true?\nA. The algorithm is a stable sorting algorithm, preserving the relative order of equal elements.\nB. The algorithm has a worst-case time complexity worse than O(n log n) due to its reliance on heap construction.\nC. The algorithm requires additional memory proportional to the input size, resulting in O(n) extra space complexity.\nD. The algorithm's performance significantly improves when the input array is nearly sorted.\nE. The algorithm's performance is largely unaffected by the initial order of the elements in the array.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_569","media":["validation_569_0.mp4"],"messages":[{"role":"user","question":"What is the most likely underlying condition causing these signs?","answer":"Hypertension","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_16","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>What is the most likely underlying condition causing these signs?"}]},{"id":"validation_57","media":["validation_57_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why the phone is still able to receive incoming calls?","answer":"D","hint":"","options":{"A":"The mesh size is much smaller than the wavelength of both the incoming and outgoing signals, so the cage blocks both equally, but the phone is more sensitive to incoming signals than the detector is to outgoing signals.","B":"The cage allows the higher frequency incoming signals to penetrate due to their shorter wavelengths while blocking the lower frequency outgoing signals emitted by the phone.","C":"The electromagnetic waves emitted by the phone are reflected back by the cage, causing interference patterns that reduce the signal outside, while incoming signals penetrate the mesh due to its geometric configuration.","D":"The wire mesh cage attenuates electromagnetic waves differently depending on their propagation direction; the phone's antenna can receive incoming signals through small apertures in the mesh.","E":"The phone uses a different frequency for receiving signals than for transmitting, and the cage selectively blocks the transmitting frequency but allows the receiving frequency to pass through."},"choices":[],"video_id":"Electromagnetism_5","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains why the phone is still able to receive incoming calls?\nA. The mesh size is much smaller than the wavelength of both the incoming and outgoing signals, so the cage blocks both equally, but the phone is more sensitive to incoming signals than the detector is to outgoing signals.\nB. The cage allows the higher frequency incoming signals to penetrate due to their shorter wavelengths while blocking the lower frequency outgoing signals emitted by the phone.\nC. The electromagnetic waves emitted by the phone are reflected back by the cage, causing interference patterns that reduce the signal outside, while incoming signals penetrate the mesh due to its geometric configuration.\nD. The wire mesh cage attenuates electromagnetic waves differently depending on their propagation direction; the phone's antenna can receive incoming signals through small apertures in the mesh.\nE. The phone uses a different frequency for receiving signals than for transmitting, and the cage selectively blocks the transmitting frequency but allows the receiving frequency to pass through.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_570","media":["validation_570_0.mp4"],"messages":[{"role":"user","question":"What is this disease based on the typical symptoms of a common disease shown in the video?","answer":"B","hint":"","options":{"A":"Coronary Heart Disease","B":"Hypertension","C":"Parkinson's disease","D":"Chronic Kidney Disease","E":"Hyperglycemia"},"choices":[],"video_id":"Basic_Medicine_16","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What is this disease based on the typical symptoms of a common disease shown in the video?\nA. Coronary Heart Disease\nB. Hypertension\nC. Parkinson's disease\nD. Chronic Kidney Disease\nE. Hyperglycemia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_571","media":["validation_571_0.mp4"],"messages":[{"role":"user","question":"The characters in the video primarily demonstrate a _____ leadership style.","answer":"transformational","hint":"","options":{},"choices":[],"video_id":"Management_9","question_type":"open-ended","subject":"Management","prompt":"<video>The characters in the video primarily demonstrate a _____ leadership style."}]},{"id":"validation_572","media":["validation_572_0.mp4"],"messages":[{"role":"user","question":"The machine shown in the video is most effective at compacting _____ soils.","answer":"granular","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_18","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>The machine shown in the video is most effective at compacting _____ soils."}]},{"id":"validation_573","media":["validation_573_0.mp4"],"messages":[{"role":"user","question":"The model shows the mechanics of a(an) ______ engine.","answer":"heat","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_7","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>The model shows the mechanics of a(an) ______ engine."}]},{"id":"validation_574","media":["validation_574_0.mp4"],"messages":[{"role":"user","question":"Can the wheel rotate for a longer period of time and why?","answer":"C","hint":"","options":{"A":"No. Because the water in the bottle absorbs the energy of the wheel.","B":"No. Because there is no external source of energy for the wheel.","C":"Yes. Because the water below provides energy to the wheel.","D":"Yes. Because wind energy is converted into mechanical energy of the wheel.","E":"Yes. Because electrical energy is converted into mechanical energy of the wheel."},"choices":[],"video_id":"Thermodynamics_7","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Can the wheel rotate for a longer period of time and why?\nA. No. Because the water in the bottle absorbs the energy of the wheel.\nB. No. Because there is no external source of energy for the wheel.\nC. Yes. Because the water below provides energy to the wheel.\nD. Yes. Because wind energy is converted into mechanical energy of the wheel.\nE. Yes. Because electrical energy is converted into mechanical energy of the wheel.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_575","media":["validation_575_0.mp4"],"messages":[{"role":"user","question":"Which of the following explanations best describes how the wheel continues to spin, and what role does the clear liquid play in this process?","answer":"E","hint":"","options":{"A":"The transparent liquid converts its kinetic energy into the kinetic energy of the wheel, causing it to keep spinning.","B":"The ions in the transparent liquid form a galvanic cell environment, converting electrical energy into the mechanical energy of the wheel.","C":"The wheel continues to spin due to the conservation of angular momentum in a nearly frictionless environment, with the liquid acting as a lubricant between moving parts.","D":"The clear liquid provides a cooling effect that reduces the temperature of the piston, decreasing internal energy and allowing the wheel to spin longer by reducing thermal losses.","E":"A temperature difference between the clear liquid and the surrounding air creates a heat engine cycle within the piston mechanism, converting thermal energy into mechanical work."},"choices":[],"video_id":"Thermodynamics_7","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following explanations best describes how the wheel continues to spin, and what role does the clear liquid play in this process?\nA. The transparent liquid converts its kinetic energy into the kinetic energy of the wheel, causing it to keep spinning.\nB. The ions in the transparent liquid form a galvanic cell environment, converting electrical energy into the mechanical energy of the wheel.\nC. The wheel continues to spin due to the conservation of angular momentum in a nearly frictionless environment, with the liquid acting as a lubricant between moving parts.\nD. The clear liquid provides a cooling effect that reduces the temperature of the piston, decreasing internal energy and allowing the wheel to spin longer by reducing thermal losses.\nE. A temperature difference between the clear liquid and the surrounding air creates a heat engine cycle within the piston mechanism, converting thermal energy into mechanical work.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_576","media":["validation_576_0.mp4"],"messages":[{"role":"user","question":"The worst-case time complexity of the alogrithm implemented in the video is O(______).","answer":"n^2","hint":"","options":{},"choices":[],"video_id":"Computer_Science_31","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The worst-case time complexity of the alogrithm implemented in the video is O(______)."}]},{"id":"validation_577","media":["validation_577_0.mp4"],"messages":[{"role":"user","question":"What kind of sorting algorithm is used in the video?","answer":"E","hint":"","options":{"A":"insertion sort","B":"heap sort","C":"merge sort","D":"selection sort","E":"quick sort"},"choices":[],"video_id":"Computer_Science_31","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of sorting algorithm is used in the video?\nA. insertion sort\nB. heap sort\nC. merge sort\nD. selection sort\nE. quick sort\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_578","media":["validation_578_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements accurately describes a key difference between the sorting algorithm demonstrated in the video and Merge Sort?","answer":"D","hint":"","options":{"A":"The algorithm in the video combines sorted subarrays by merging, whereas merge sort partitions the array using a pivot.","B":"The algorithm in the video has a worst-case time complexity of O(n log n), while merge sort's worst-case time complexity is O(n²).","C":"The algorithm in the video consistently divides the array into two equal halves, but merge sort partitions the array unevenly.","D":"The algorithm in the video selects a pivot to partition the array, unlike merge sort which divides the array without pivots.","E":"The algorithm in the video is a stable sort, whereas merge sort is an unstable sort."},"choices":[],"video_id":"Computer_Science_31","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements accurately describes a key difference between the sorting algorithm demonstrated in the video and Merge Sort?\nA. The algorithm in the video combines sorted subarrays by merging, whereas merge sort partitions the array using a pivot.\nB. The algorithm in the video has a worst-case time complexity of O(n log n), while merge sort's worst-case time complexity is O(n²).\nC. The algorithm in the video consistently divides the array into two equal halves, but merge sort partitions the array unevenly.\nD. The algorithm in the video selects a pivot to partition the array, unlike merge sort which divides the array without pivots.\nE. The algorithm in the video is a stable sort, whereas merge sort is an unstable sort.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_579","media":["validation_579_0.mp4"],"messages":[{"role":"user","question":"What is the worst-case time complexity of this algorithm?","answer":"D","hint":"","options":{"A":"O(n)","B":"O(n log n)","C":"O(log n)","D":"O(n²)","E":"O(n³)"},"choices":[],"video_id":"Computer_Science_31","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What is the worst-case time complexity of this algorithm?\nA. O(n)\nB. O(n log n)\nC. O(log n)\nD. O(n²)\nE. O(n³)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_58","media":["validation_58_0.mp4"],"messages":[{"role":"user","question":"Which of the following pathophysiological mechanisms is most likely being demonstrated, and which biomedical engineering intervention could most effectively manage this condition?","answer":"B","hint":"","options":{"A":"Atherosclerosis leading to myocardial infarction, managed by coronary stent implantation.","B":"Chronic hypertension causing intracerebral hemorrhage, managed by implantable blood pressure sensors for real-time monitoring.","C":"Hemophilia causing spontaneous bleeding, managed through recombinant clotting factor therapy.","D":"Sickle-cell disease causing vascular occlusions, managed by gene therapy to correct hemoglobin mutations.","E":"Deep vein thrombosis leading to pulmonary embolism, managed by developing anticoagulant drug delivery systems."},"choices":[],"video_id":"Basic_Medicine_1","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following pathophysiological mechanisms is most likely being demonstrated, and which biomedical engineering intervention could most effectively manage this condition?\nA. Atherosclerosis leading to myocardial infarction, managed by coronary stent implantation.\nB. Chronic hypertension causing intracerebral hemorrhage, managed by implantable blood pressure sensors for real-time monitoring.\nC. Hemophilia causing spontaneous bleeding, managed through recombinant clotting factor therapy.\nD. Sickle-cell disease causing vascular occlusions, managed by gene therapy to correct hemoglobin mutations.\nE. Deep vein thrombosis leading to pulmonary embolism, managed by developing anticoagulant drug delivery systems.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_580","media":["validation_580_0.mp4"],"messages":[{"role":"user","question":"The drug of choice for terminating the symptom shown in the video is intravenous _______.","answer":"Lorazepam","hint":"","options":{},"choices":[],"video_id":"Pharmacy_16","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>The drug of choice for terminating the symptom shown in the video is intravenous _______."}]},{"id":"validation_581","media":["validation_581_0.mp4"],"messages":[{"role":"user","question":"Which of the following drugs can relieve and treat this symptom?","answer":"B","hint":"","options":{"A":"Omeprazole","B":"Phenytoin","C":"Lisinopril","D":"Simvastatin","E":"Metformin"},"choices":[],"video_id":"Pharmacy_16","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following drugs can relieve and treat this symptom?\nA. Omeprazole\nB. Phenytoin\nC. Lisinopril\nD. Simvastatin\nE. Metformin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_582","media":["validation_582_0.mp4"],"messages":[{"role":"user","question":"Which of the following categories does the disease shown in the video belong to?","answer":"C","hint":"","options":{"A":"Syndrome","B":"Neoplasia","C":"Malformation","D":"Disruption","E":"Degeneration"},"choices":[],"video_id":"Basic_Medicine_17","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following categories does the disease shown in the video belong to?\nA. Syndrome\nB. Neoplasia\nC. Malformation\nD. Disruption\nE. Degeneration\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_583","media":["validation_583_0.mp4"],"messages":[{"role":"user","question":"From the video clip, based on the circuit and the waveform displayed on the screen, it can be observed that ___-bandside modulation technology is used.","answer":"double","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_13","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>From the video clip, based on the circuit and the waveform displayed on the screen, it can be observed that ___-bandside modulation technology is used."}]},{"id":"validation_584","media":["validation_584_0.mp4"],"messages":[{"role":"user","question":"After modulation how does the bandwidth of the signal change compared to the original?","answer":"C","hint":"","options":{"A":"the same","B":"half","C":"twice","D":"four times","E":"three times"},"choices":[],"video_id":"Electronics_and_Communication_13","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>After modulation how does the bandwidth of the signal change compared to the original?\nA. the same\nB. half\nC. twice\nD. four times\nE. three times\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_585","media":["validation_585_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most plausible explanation for the behavior of the circuit?","answer":"E","hint":"","options":{"A":"The circuit is a pulse width modulator where the duty cycle changes over time, causing the observed waveform transitions.","B":"The circuit is a square wave generator whose output is being filtered by an RC low-pass filter, smoothing the waveform into a triangle and eventually a sine wave.","C":"The circuit is a relaxation oscillator producing a sawtooth waveform that transitions due to varying capacitance in the circuit.","D":"The circuit is a frequency multiplier where harmonics are being generated and filtered, resulting in the observed waveform changes.","E":"The circuit is an oscillator that, during startup, exhibits transient responses that evolve into a steady-state sine wave as the components reach their operating conditions."},"choices":[],"video_id":"Electronics_and_Communication_13","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which of the following is the most plausible explanation for the behavior of the circuit?\nA. The circuit is a pulse width modulator where the duty cycle changes over time, causing the observed waveform transitions.\nB. The circuit is a square wave generator whose output is being filtered by an RC low-pass filter, smoothing the waveform into a triangle and eventually a sine wave.\nC. The circuit is a relaxation oscillator producing a sawtooth waveform that transitions due to varying capacitance in the circuit.\nD. The circuit is a frequency multiplier where harmonics are being generated and filtered, resulting in the observed waveform changes.\nE. The circuit is an oscillator that, during startup, exhibits transient responses that evolve into a steady-state sine wave as the components reach their operating conditions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_586","media":["validation_586_0.mp4"],"messages":[{"role":"user","question":"Based on the information presented in the video, which of the following best describes the process occurring in the circuit?","answer":"D","hint":"","options":{"A":"A filter circuit converting a DC signal into an AC signal","B":"A function generator outputting multiple waveforms sequentially","C":"A frequency doubler circuit increasing the frequency of the input signal","D":"An RC relaxation oscillator generates triangular waves, filtered into sine waves","E":"A mixer circuit combining two frequencies to produce beat frequencies"},"choices":[],"video_id":"Electronics_and_Communication_13","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the information presented in the video, which of the following best describes the process occurring in the circuit?\nA. A filter circuit converting a DC signal into an AC signal\nB. A function generator outputting multiple waveforms sequentially\nC. A frequency doubler circuit increasing the frequency of the input signal\nD. An RC relaxation oscillator generates triangular waves, filtered into sine waves\nE. A mixer circuit combining two frequencies to produce beat frequencies\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_587","media":["validation_587_0.mp4"],"messages":[{"role":"user","question":"At the end of the video, the liquid added to the beaker is known as _______.","answer":"Phenolphthalein","hint":"","options":{},"choices":[],"video_id":"Chemistry_7","question_type":"open-ended","subject":"Chemistry","prompt":"<video>At the end of the video, the liquid added to the beaker is known as _______."}]},{"id":"validation_588","media":["validation_588_0.mp4"],"messages":[{"role":"user","question":"Based on the observations in the video, which element is most likely involved?","answer":"C","hint":"","options":{"A":"Sodium (Na)","B":"Magnesium (Mg)","C":"Lithium (Li)","D":"Aluminum (Al)","E":"Iron (Fe)"},"choices":[],"video_id":"Chemistry_7","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Based on the observations in the video, which element is most likely involved?\nA. Sodium (Na)\nB. Magnesium (Mg)\nC. Lithium (Li)\nD. Aluminum (Al)\nE. Iron (Fe)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_589","media":["validation_589_0.mp4"],"messages":[{"role":"user","question":"What disease does the video show?","answer":"B","hint":"","options":{"A":"Nephroblastomatosis","B":"Polycystic kidney disease","C":"Familial juvenile nephronophthisis","D":"Acquired cystic kidney disease","E":"Simple cysts"},"choices":[],"video_id":"Basic_Medicine_18","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What disease does the video show?\nA. Nephroblastomatosis\nB. Polycystic kidney disease\nC. Familial juvenile nephronophthisis\nD. Acquired cystic kidney disease\nE. Simple cysts\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_59","media":["validation_59_0.mp4"],"messages":[{"role":"user","question":"Which of the following bacterial virulence factors is primarily responsible for the symptoms observed?","answer":"C","hint":"","options":{"A":"Diphtheria toxin inhibiting elongation factor 2","B":"Tetanus toxin blocking inhibitory neurotransmitter release","C":"Pertussis toxin increasing cAMP in respiratory epithelial cells","D":"Shiga toxin inhibiting the 60S ribosomal subunit","E":"Exfoliative toxin causing desquamation of skin"},"choices":[],"video_id":"Preventive_Medicine_0","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following bacterial virulence factors is primarily responsible for the symptoms observed?\nA. Diphtheria toxin inhibiting elongation factor 2\nB. Tetanus toxin blocking inhibitory neurotransmitter release\nC. Pertussis toxin increasing cAMP in respiratory epithelial cells\nD. Shiga toxin inhibiting the 60S ribosomal subunit\nE. Exfoliative toxin causing desquamation of skin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_590","media":["validation_590_0.mp4"],"messages":[{"role":"user","question":"Which of the following genetic mutations is most likely responsible for this patient's clinical presentation?","answer":"A","hint":"","options":{"A":"Mutation in the **PKD1** gene encoding polycystin-1 leading to disrupted cell-cell adhesion","B":"Mutation in the **PKHD1** gene encoding fibrocystin causing defective ciliary function","C":"Mutation in the **TSC1** gene encoding hamartin resulting in cortical tuber formation","D":"Deletion of the **VHL** gene leading to increased hypoxia-inducible factor activity","E":"Mutation in the **COL4A5** gene encoding type IV collagen affecting basement membranes"},"choices":[],"video_id":"Basic_Medicine_18","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following genetic mutations is most likely responsible for this patient's clinical presentation?\nA. Mutation in the **PKD1** gene encoding polycystin-1 leading to disrupted cell-cell adhesion\nB. Mutation in the **PKHD1** gene encoding fibrocystin causing defective ciliary function\nC. Mutation in the **TSC1** gene encoding hamartin resulting in cortical tuber formation\nD. Deletion of the **VHL** gene leading to increased hypoxia-inducible factor activity\nE. Mutation in the **COL4A5** gene encoding type IV collagen affecting basement membranes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_591","media":["validation_591_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most accurate statement regarding this patient's genotype?","answer":"E","hint":"","options":{"A":"The patient is homozygous for a PKD1 mutation.","B":"The patient is heterozygous for a PKD1 mutation.","C":"The patient is homozygous for a PKD2 mutation.","D":"The patient is heterozygous for a PKD2 mutation.","E":"The patient's genotype cannot be determined."},"choices":[],"video_id":"Basic_Medicine_18","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following is the most accurate statement regarding this patient's genotype?\nA. The patient is homozygous for a PKD1 mutation.\nB. The patient is heterozygous for a PKD1 mutation.\nC. The patient is homozygous for a PKD2 mutation.\nD. The patient is heterozygous for a PKD2 mutation.\nE. The patient's genotype cannot be determined.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_592","media":["validation_592_0.mp4"],"messages":[{"role":"user","question":"Why does the wig appear as shown in the video?","answer":"A","hint":"","options":{"A":"The wig gets electric charge from the spherical shell, and different hair strands with the same electric charge repel each other.","B":"The wig gets electric charges through friction, and different hair strands with the same charge repel each other.","C":"The strong wind in the environment blows the wig into this shape.","D":"Too dry air causes the electrons in the wig to transfer into the air.","E":"Charge transfer occurs between different hair strands of the wig, and different hair strands carry different charges."},"choices":[],"video_id":"Electrical_Engineering_22","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Why does the wig appear as shown in the video?\nA. The wig gets electric charge from the spherical shell, and different hair strands with the same electric charge repel each other.\nB. The wig gets electric charges through friction, and different hair strands with the same charge repel each other.\nC. The strong wind in the environment blows the wig into this shape.\nD. Too dry air causes the electrons in the wig to transfer into the air.\nE. Charge transfer occurs between different hair strands of the wig, and different hair strands carry different charges.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_593","media":["validation_593_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the behavior of the hair strands when the stick held in the hand is introduced?","answer":"A","hint":"","options":{"A":"The introduced stick causes the hair strands to be grounded; upon contact, the hair strands discharge and revert to their original position.","B":"The electric field from the stick ionizes the air around the hair strands, allowing electrons to transfer and reverse the charge on the hairs, causing temporary attraction.","C":"The presence of the stick enhances the electric field around the wig, increasing the electrostatic forces and causing the hair strands to be momentarily attracted before repelling again.","D":"The hair strands are attracted to the stick because it emits charges opposite to those on the hairs, and upon balancing the charges, the hairs return to their prior position.","E":"The stick causes a redistribution of charges within the hair strands, leading to dipole formation that results in temporary attraction followed by repulsion when the dipoles diminish."},"choices":[],"video_id":"Electrical_Engineering_22","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following best explains the behavior of the hair strands when the stick held in the hand is introduced?\nA. The introduced stick causes the hair strands to be grounded; upon contact, the hair strands discharge and revert to their original position.\nB. The electric field from the stick ionizes the air around the hair strands, allowing electrons to transfer and reverse the charge on the hairs, causing temporary attraction.\nC. The presence of the stick enhances the electric field around the wig, increasing the electrostatic forces and causing the hair strands to be momentarily attracted before repelling again.\nD. The hair strands are attracted to the stick because it emits charges opposite to those on the hairs, and upon balancing the charges, the hairs return to their prior position.\nE. The stick causes a redistribution of charges within the hair strands, leading to dipole formation that results in temporary attraction followed by repulsion when the dipoles diminish.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_594","media":["validation_594_0.mp4"],"messages":[{"role":"user","question":"The mechanism shown in the video is known as a **________** mechanism.","answer":"spring-crank","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_1","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The mechanism shown in the video is known as a **________** mechanism."}]},{"id":"validation_595","media":["validation_595_0.mp4"],"messages":[{"role":"user","question":"At the beginning of the video, some sensors can be seen at the rear of the vessel. Based on the detection method shown in the video, these underwater sensors are referred to as ________.","answer":"hydrophones","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_19","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>At the beginning of the video, some sensors can be seen at the rear of the vessel. Based on the detection method shown in the video, these underwater sensors are referred to as ________."}]},{"id":"validation_596","media":["validation_596_0.mp4"],"messages":[{"role":"user","question":"Which method is used for indirect exploration of subsurface conditions","answer":"D","hint":"","options":{"A":"Gravitational methods","B":"Resistivity methods","C":"Electromagnetic methods","D":"Seismic methods","E":"Ground-penetrating radar"},"choices":[],"video_id":"Civil_Engineering_19","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which method is used for indirect exploration of subsurface conditions\nA. Gravitational methods\nB. Resistivity methods\nC. Electromagnetic methods\nD. Seismic methods\nE. Ground-penetrating radar\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_597","media":["validation_597_0.mp4"],"messages":[{"role":"user","question":"Based on the marine survey described in the video, which engineering application is most likely the primary objective of this physical exploration to ensure safe and efficient project planning in the marine environment?","answer":"A","hint":"","options":{"A":"Exploration for hydrocarbon deposits to support offshore oil and gas development.","B":"Mapping of seabed habitats to enhance marine biodiversity conservation efforts.","C":"Assessment of potential sites for submarine cable routing for telecommunications infrastructure.","D":"Planning of dredging operations for harbor deepening and maintenance.","E":"Evaluation of seabed conditions for the installation of tidal energy extraction systems."},"choices":[],"video_id":"Civil_Engineering_19","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the marine survey described in the video, which engineering application is most likely the primary objective of this physical exploration to ensure safe and efficient project planning in the marine environment?\nA. Exploration for hydrocarbon deposits to support offshore oil and gas development.\nB. Mapping of seabed habitats to enhance marine biodiversity conservation efforts.\nC. Assessment of potential sites for submarine cable routing for telecommunications infrastructure.\nD. Planning of dredging operations for harbor deepening and maintenance.\nE. Evaluation of seabed conditions for the installation of tidal energy extraction systems.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_598","media":["validation_598_0.mp4"],"messages":[{"role":"user","question":"Based on the situation depicted in the animation, this condition is referred to as _____.","answer":"Gastro-Oesophageal Reflux Disease (GORD)","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_19","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the situation depicted in the animation, this condition is referred to as _____."}]},{"id":"validation_599","media":["validation_599_0.mp4"],"messages":[{"role":"user","question":"What kind of size of screen is best fit for the movie showed in the video?","answer":"D","hint":"","options":{"A":"2:1","B":"30:9","C":"3:1","D":"4:3","E":"21:9"},"choices":[],"video_id":"Art_7","question_type":"multiple-choice","subject":"Art","prompt":"<video>What kind of size of screen is best fit for the movie showed in the video?\nA. 2:1\nB. 30:9\nC. 3:1\nD. 4:3\nE. 21:9\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_6","media":["validation_6_0.mp4"],"messages":[{"role":"user","question":"What is the algorithm shown in the video?","answer":"Binary Search","hint":"","options":{},"choices":[],"video_id":"Computer_Science_1","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What is the algorithm shown in the video?"}]},{"id":"validation_60","media":["validation_60_0.mp4"],"messages":[{"role":"user","question":"Considering the environmental conditions shown in the video, which of the following pathogens is the most likely cause of this outbreak?","answer":"B","hint":"","options":{"A":"Hepatitis A virus","B":"Hepatitis E virus","C":"Hepatitis B virus","D":"Leptospira interrogans","E":"Schistosoma haematobium"},"choices":[],"video_id":"Preventive_Medicine_1","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Considering the environmental conditions shown in the video, which of the following pathogens is the most likely cause of this outbreak?\nA. Hepatitis A virus\nB. Hepatitis E virus\nC. Hepatitis B virus\nD. Leptospira interrogans\nE. Schistosoma haematobium\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_600","media":["validation_600_0.mp4"],"messages":[{"role":"user","question":"Which director most likely directed the film?","answer":"E","hint":"","options":{"A":"Christopher Nolan","B":"Stanley Kubrick","C":"Martin Scorsese","D":"Tim Burton","E":"Wes Anderson"},"choices":[],"video_id":"Art_7","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which director most likely directed the film?\nA. Christopher Nolan\nB. Stanley Kubrick\nC. Martin Scorsese\nD. Tim Burton\nE. Wes Anderson\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_601","media":["validation_601_0.mp4"],"messages":[{"role":"user","question":"Which artistic and design movement is most prominently reflected in the film's production design?","answer":"B","hint":"","options":{"A":"Art Nouveau","B":"Art Deco","C":"Bauhaus","D":"Surrealism","E":"Gothic Revival"},"choices":[],"video_id":"Art_7","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which artistic and design movement is most prominently reflected in the film's production design?\nA. Art Nouveau\nB. Art Deco\nC. Bauhaus\nD. Surrealism\nE. Gothic Revival\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_602","media":["validation_602_0.mp4"],"messages":[{"role":"user","question":"Novels come in many genres, as do films. Considering the story, narrative style, and techniques employed in the short film, this piece aligns with the expressive style of _______ in literature.","answer":"romanticism","hint":"","options":{},"choices":[],"video_id":"Literature_5","question_type":"open-ended","subject":"Literature","prompt":"<video>Novels come in many genres, as do films. Considering the story, narrative style, and techniques employed in the short film, this piece aligns with the expressive style of _______ in literature."}]},{"id":"validation_603","media":["validation_603_0.mp4"],"messages":[{"role":"user","question":"What material production process is shown in the video?","answer":"C","hint":"","options":{"A":"Cellulose","B":"Fats","C":"Gelatin","D":"Metal alloys","E":"Glass"},"choices":[],"video_id":"Biomedical_Engineering_14","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What material production process is shown in the video?\nA. Cellulose\nB. Fats\nC. Gelatin\nD. Metal alloys\nE. Glass\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_604","media":["validation_604_0.mp4"],"messages":[{"role":"user","question":"The 3D printing type being demonstrated in the video is called **_______**.","answer":"LOM","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_21","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The 3D printing type being demonstrated in the video is called **_______**."}]},{"id":"validation_605","media":["validation_605_0.mp4"],"messages":[{"role":"user","question":"Based on the video, it is undergoing a test to diagnose an allergy to which class of antibiotics? **________**","answer":"beta-lactam","hint":"","options":{},"choices":[],"video_id":"Pharmacy_17","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>Based on the video, it is undergoing a test to diagnose an allergy to which class of antibiotics? **________**"}]},{"id":"validation_606","media":["validation_606_0.mp4"],"messages":[{"role":"user","question":"Based on the procedure described in the video, which type of hypersensitivity reaction is most likely being assessed?","answer":"A","hint":"","options":{"A":"Type I Hypersensitivity (Immediate, IgE-mediated)","B":"Type II Hypersensitivity (Antibody-mediated cytotoxic)","C":"Type III Hypersensitivity (Immune complex-mediated)","D":"Type IV Hypersensitivity (Delayed-type, T-cell mediated)","E":"Type VI Hypersensitivity (Antibody-dependent cell-mediated cytotoxicity)"},"choices":[],"video_id":"Pharmacy_17","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the procedure described in the video, which type of hypersensitivity reaction is most likely being assessed?\nA. Type I Hypersensitivity (Immediate, IgE-mediated)\nB. Type II Hypersensitivity (Antibody-mediated cytotoxic)\nC. Type III Hypersensitivity (Immune complex-mediated)\nD. Type IV Hypersensitivity (Delayed-type, T-cell mediated)\nE. Type VI Hypersensitivity (Antibody-dependent cell-mediated cytotoxicity)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_607","media":["validation_607_0.mp4"],"messages":[{"role":"user","question":"Based on the locations of transcription and translation shown in the video, the cell depicted is a(n) **_______** cell.","answer":"eukaryotic","hint":"","options":{},"choices":[],"video_id":"Biology_5","question_type":"open-ended","subject":"Biology","prompt":"<video>Based on the locations of transcription and translation shown in the video, the cell depicted is a(n) **_______** cell."}]},{"id":"validation_608","media":["validation_608_0.mp4"],"messages":[{"role":"user","question":"In this video, what type of molecular is NOT referred to be involved in the process?","answer":"D","hint":"","options":{"A":"mRNA transcript","B":"tRNA","C":"ribosome","D":"DNA polymerase","E":"amino acid"},"choices":[],"video_id":"Biology_5","question_type":"multiple-choice","subject":"Biology","prompt":"<video>In this video, what type of molecular is NOT referred to be involved in the process?\nA. mRNA transcript\nB. tRNA\nC. ribosome\nD. DNA polymerase\nE. amino acid\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_609","media":["validation_609_0.mp4"],"messages":[{"role":"user","question":"In this video, what type of molecular is NOT referred to be involved in the shown process?","answer":"C","hint":"","options":{"A":"mRNA transcript","B":"tRNA","C":"DNA polymerase","D":"rRNA","E":"amino acid"},"choices":[],"video_id":"Biology_5","question_type":"multiple-choice","subject":"Biology","prompt":"<video>In this video, what type of molecular is NOT referred to be involved in the shown process?\nA. mRNA transcript\nB. tRNA\nC. DNA polymerase\nD. rRNA\nE. amino acid\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_61","media":["validation_61_0.mp4"],"messages":[{"role":"user","question":"Which of the following viruses is  transmitted by the method shown in the video?","answer":"C","hint":"","options":{"A":"Influenza virus","B":"HCV","C":"HAV","D":"HBV","E":"HIV"},"choices":[],"video_id":"Preventive_Medicine_1","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following viruses is  transmitted by the method shown in the video?\nA. Influenza virus\nB. HCV\nC. HAV\nD. HBV\nE. HIV\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_610","media":["validation_610_0.mp4"],"messages":[{"role":"user","question":"Which of the following lighting techniques is most likely being used to enhance the mood of the scene?","answer":"A","hint":"","options":{"A":"Low-key lighting to create a sense of suspense","B":"High-key lighting to produce even illumination","C":"Three-point lighting to highlight the subject","D":"Flood lighting to eliminate shadows","E":"Underlighting to create a grotesque effect"},"choices":[],"video_id":"Art_8","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following lighting techniques is most likely being used to enhance the mood of the scene?\nA. Low-key lighting to create a sense of suspense\nB. High-key lighting to produce even illumination\nC. Three-point lighting to highlight the subject\nD. Flood lighting to eliminate shadows\nE. Underlighting to create a grotesque effect\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_611","media":["validation_611_0.mp4"],"messages":[{"role":"user","question":"Which of the following themes is most prominently suggested by the visual elements and character dynamics in the scene?","answer":"E","hint":"","options":{"A":"Nostalgia for nature in an urbanized environment","B":"Isolation of the individual within societal structures","C":"Inevitability of fate influencing human behavior","D":"Moral decay beneath a facade of affluence","E":"Predatory power dynamics and struggles for dominance"},"choices":[],"video_id":"Art_8","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following themes is most prominently suggested by the visual elements and character dynamics in the scene?\nA. Nostalgia for nature in an urbanized environment\nB. Isolation of the individual within societal structures\nC. Inevitability of fate influencing human behavior\nD. Moral decay beneath a facade of affluence\nE. Predatory power dynamics and struggles for dominance\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_612","media":["validation_612_0.mp4"],"messages":[{"role":"user","question":"which of the following themes is most prominently suggested by the visual elements and character dynamics in the scene?","answer":"D","hint":"","options":{"A":"Nostalgia for nature in an urbanized environment","B":"Isolation of the individual within societal structures","C":"Inevitability of fate influencing human behavior","D":"Predatory power dynamics and struggles for dominance","E":"Conflict between traditional values and modern influences"},"choices":[],"video_id":"Art_8","question_type":"multiple-choice","subject":"Art","prompt":"<video>which of the following themes is most prominently suggested by the visual elements and character dynamics in the scene?\nA. Nostalgia for nature in an urbanized environment\nB. Isolation of the individual within societal structures\nC. Inevitability of fate influencing human behavior\nD. Predatory power dynamics and struggles for dominance\nE. Conflict between traditional values and modern influences\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_613","media":["validation_613_0.mp4"],"messages":[{"role":"user","question":"Which cinematographic technique is most prominently used to create the film's visual style?","answer":"D","hint":"","options":{"A":"High-key lighting with wide depth of field to convey a cheerful atmosphere","B":"Handheld camera with shaky movements to increase realism","C":"Use of wide-angle lenses and deep focus to emphasize the environment","D":"Low-key lighting with shallow depth of field to create a sense of intimacy and tension","E":"Time-lapse photography to depict the passage of time"},"choices":[],"video_id":"Art_9","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which cinematographic technique is most prominently used to create the film's visual style?\nA. High-key lighting with wide depth of field to convey a cheerful atmosphere\nB. Handheld camera with shaky movements to increase realism\nC. Use of wide-angle lenses and deep focus to emphasize the environment\nD. Low-key lighting with shallow depth of field to create a sense of intimacy and tension\nE. Time-lapse photography to depict the passage of time\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_614","media":["validation_614_0.mp4"],"messages":[{"role":"user","question":"what kind of phenomenon is showed in the video","answer":"D","hint":"","options":{"A":"Photosynthesis","B":"Plate tectonics","C":"Atmospheric pressure","D":"Water cycle","E":"Global warming"},"choices":[],"video_id":"Geography_10","question_type":"multiple-choice","subject":"Geography","prompt":"<video>what kind of phenomenon is showed in the video\nA. Photosynthesis\nB. Plate tectonics\nC. Atmospheric pressure\nD. Water cycle\nE. Global warming\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_615","media":["validation_615_0.mp4"],"messages":[{"role":"user","question":"The smaller circle in video, its linear velocity at the edge is ______ ft/min.","answer":"188.5 ft/min","hint":"","options":{},"choices":[],"video_id":"Mechanics_23","question_type":"open-ended","subject":"Mechanics","prompt":"<video>The smaller circle in video, its linear velocity at the edge is ______ ft/min."}]},{"id":"validation_616","media":["validation_616_0.mp4"],"messages":[{"role":"user","question":"How does the linear velocity of the left pointer change in the video?","answer":"B","hint":"","options":{"A":"Slower first, then faster","B":"Keep same","C":"Faster first, then slower","D":"Slower","E":"Faster"},"choices":[],"video_id":"Mechanics_23","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>How does the linear velocity of the left pointer change in the video?\nA. Slower first, then faster\nB. Keep same\nC. Faster first, then slower\nD. Slower\nE. Faster\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_617","media":["validation_617_0.mp4"],"messages":[{"role":"user","question":"In the video, what is the linear velocity, in feet per minute, of a point on the circumference of the larger circle?","answer":"A","hint":"","options":{"A":"Approximately 377 ft/min","B":"Approximately 188 ft/min","C":"Approximately 753 ft/min","D":"Approximately 113 ft/min","E":"Approximately 226 ft/min"},"choices":[],"video_id":"Mechanics_23","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>In the video, what is the linear velocity, in feet per minute, of a point on the circumference of the larger circle?\nA. Approximately 377 ft/min\nB. Approximately 188 ft/min\nC. Approximately 753 ft/min\nD. Approximately 113 ft/min\nE. Approximately 226 ft/min\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_618","media":["validation_618_0.mp4"],"messages":[{"role":"user","question":"Based on the given information about the rotational kinetic energies of the left disk and the right disk, which of the following statements is true?","answer":"E","hint":"","options":{"A":"The left disk has four times the rotational kinetic energy of the right one.","B":"The right disk has half the rotational kinetic energy of the left one.","C":"The right disk has one-fourth the rotational kinetic energy of the left one.","D":"Both two disks have the same rotational kinetic energy.","E":"Cannot be determined from the information given."},"choices":[],"video_id":"Mechanics_23","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Based on the given information about the rotational kinetic energies of the left disk and the right disk, which of the following statements is true?\nA. The left disk has four times the rotational kinetic energy of the right one.\nB. The right disk has half the rotational kinetic energy of the left one.\nC. The right disk has one-fourth the rotational kinetic energy of the left one.\nD. Both two disks have the same rotational kinetic energy.\nE. Cannot be determined from the information given.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_619","media":["validation_619_0.mp4"],"messages":[{"role":"user","question":"Based on the phenomenon shown in the video and considering the direction of the blue arrows, this indicates that the system satisfies the ____ theorem.","answer":"reciprocity","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_14","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>Based on the phenomenon shown in the video and considering the direction of the blue arrows, this indicates that the system satisfies the ____ theorem."}]},{"id":"validation_62","media":["validation_62_0.mp4"],"messages":[{"role":"user","question":" Based on the video, which medication is most likely to cause lactic acidosis in this patient?","answer":"C","hint":"","options":{"A":"Ciprofloxacin","B":"Aspirin","C":"Metformin","D":"Pilocarpine","E":"Levothyroxine"},"choices":[],"video_id":"Pharmacy_1","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video> Based on the video, which medication is most likely to cause lactic acidosis in this patient?\nA. Ciprofloxacin\nB. Aspirin\nC. Metformin\nD. Pilocarpine\nE. Levothyroxine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_620","media":["validation_620_0.mp4"],"messages":[{"role":"user","question":"Based on the two flashcards shown in the video, which literary device is exemplified by the words and images presented?","answer":"A","hint":"","options":{"A":"Polysemy","B":"Synonymy","C":"Antonymy","D":"Metonymy","E":"Homophones"},"choices":[],"video_id":"Literature_6","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the two flashcards shown in the video, which literary device is exemplified by the words and images presented?\nA. Polysemy\nB. Synonymy\nC. Antonymy\nD. Metonymy\nE. Homophones\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_621","media":["validation_621_0.mp4"],"messages":[{"role":"user","question":"The phenomenon in the video is the principle of which of the following items?","answer":"D","hint":"","options":{"A":"Laser light.","B":"Communication base station.","C":"Electromagnetic gun.","D":"Lightning rod.","E":"Optical fiber network."},"choices":[],"video_id":"Electromagnetism_25","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>The phenomenon in the video is the principle of which of the following items?\nA. Laser light.\nB. Communication base station.\nC. Electromagnetic gun.\nD. Lightning rod.\nE. Optical fiber network.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_622","media":["validation_622_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the primary mechanism of the observed phenomenon?","answer":"C","hint":"","options":{"A":"Charging of the metal ball through electrostatic induction.","B":"Generation of eddy currents due to electromagnetic induction.","C":"Electric field-induced air breakdown causing a spark discharge.","D":"Thermal conduction leading to ionization of air molecules.","E":"Magnetic field interaction causing Lorentz forces."},"choices":[],"video_id":"Electromagnetism_25","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the primary mechanism of the observed phenomenon?\nA. Charging of the metal ball through electrostatic induction.\nB. Generation of eddy currents due to electromagnetic induction.\nC. Electric field-induced air breakdown causing a spark discharge.\nD. Thermal conduction leading to ionization of air molecules.\nE. Magnetic field interaction causing Lorentz forces.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_623","media":["validation_623_0.mp4"],"messages":[{"role":"user","question":"The ordering technique in the video is called a ________.","answer":"topological sort","hint":"","options":{},"choices":[],"video_id":"Computer_Science_32","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The ordering technique in the video is called a ________."}]},{"id":"validation_624","media":["validation_624_0.mp4"],"messages":[{"role":"user","question":"In the video, the repeated traversal and update of the grids correspond to considering each node as an **_________** node in the shown algorithm.","answer":"intermediate","hint":"","options":{},"choices":[],"video_id":"Computer_Science_33","question_type":"open-ended","subject":"Computer Science","prompt":"<video>In the video, the repeated traversal and update of the grids correspond to considering each node as an **_________** node in the shown algorithm."}]},{"id":"validation_625","media":["validation_625_0.mp4"],"messages":[{"role":"user","question":"In the experiment, the white smoke is classified as a(n) _______ compound.","answer":"ionic","hint":"","options":{},"choices":[],"video_id":"Chemistry_8","question_type":"open-ended","subject":"Chemistry","prompt":"<video>In the experiment, the white smoke is classified as a(n) _______ compound."}]},{"id":"validation_626","media":["validation_626_0.mp4"],"messages":[{"role":"user","question":"The character's symptoms depicted in the video could be alleviated by modulating **________** inhibition.","answer":"GABAergic","hint":"","options":{},"choices":[],"video_id":"Neurobiology_21","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The character's symptoms depicted in the video could be alleviated by modulating **________** inhibition."}]},{"id":"validation_627","media":["validation_627_0.mp4"],"messages":[{"role":"user","question":"The assistive technology demonstrated in the video, considering the operator’s condition and method of operation, belongs to the field of ________ engineering.","answer":"biomedical","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_15","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>The assistive technology demonstrated in the video, considering the operator’s condition and method of operation, belongs to the field of ________ engineering."}]},{"id":"validation_628","media":["validation_628_0.mp4"],"messages":[{"role":"user","question":"This type of rental agreement is known as **______**.","answer":"Jeonse","hint":"","options":{},"choices":[],"video_id":"Economics_10","question_type":"open-ended","subject":"Economics","prompt":"<video>This type of rental agreement is known as **______**."}]},{"id":"validation_629","media":["validation_629_0.mp4"],"messages":[{"role":"user","question":"Which of the following best describes the role of the system shown in the video in the economy?","answer":"D","hint":"","options":{"A":"A financial innovation method aimed at promoting homeownership for first-time buyers","B":"A social welfare policy mainly for low-income groups","C":"A government-led public housing security project","D":"A rental model that combines both residential and investment attributes","E":"An economic incentive program intended to boost short-term housing construction"},"choices":[],"video_id":"Economics_10","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following best describes the role of the system shown in the video in the economy?\nA. A financial innovation method aimed at promoting homeownership for first-time buyers\nB. A social welfare policy mainly for low-income groups\nC. A government-led public housing security project\nD. A rental model that combines both residential and investment attributes\nE. An economic incentive program intended to boost short-term housing construction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_63","media":["validation_63_0.mp4"],"messages":[{"role":"user","question":"In the video, the white substance forming on the coiled wire is elemental ______.","answer":"Silver","hint":"","options":{},"choices":[],"video_id":"Chemistry_1","question_type":"open-ended","subject":"Chemistry","prompt":"<video>In the video, the white substance forming on the coiled wire is elemental ______."}]},{"id":"validation_630","media":["validation_630_0.mp4"],"messages":[{"role":"user","question":"Which of the following economic rationales best explains why the landlord might prefer the approach shown in the video?","answer":"A","hint":"","options":{"A":"The landlord can invest the large upfront payment elsewhere, earning additional returns alongside property appreciation.","B":"The landlord reduces transaction costs associated with collecting monthly rent payments from the tenant.","C":"The landlord shifts the risk of property depreciation to the tenant by holding the upfront payment.","D":"The landlord benefits from anticipated deflation, increasing the real value of the returned deposit.","E":"The landlord avoids taxation on rental income by not receiving periodic rent payments."},"choices":[],"video_id":"Economics_10","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Which of the following economic rationales best explains why the landlord might prefer the approach shown in the video?\nA. The landlord can invest the large upfront payment elsewhere, earning additional returns alongside property appreciation.\nB. The landlord reduces transaction costs associated with collecting monthly rent payments from the tenant.\nC. The landlord shifts the risk of property depreciation to the tenant by holding the upfront payment.\nD. The landlord benefits from anticipated deflation, increasing the real value of the returned deposit.\nE. The landlord avoids taxation on rental income by not receiving periodic rent payments.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_631","media":["validation_631_0.mp4"],"messages":[{"role":"user","question":"In the video, the symptoms of the character with buds on their head often occur during _____ sleep.","answer":"REM","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_20","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the video, the symptoms of the character with buds on their head often occur during _____ sleep."}]},{"id":"validation_632","media":["validation_632_0.mp4"],"messages":[{"role":"user","question":"What time period the phenomenon may have occurred?","answer":"C","hint":"","options":{"A":"Deep sleep stages","B":"Light sleep stages","C":"REM","D":"Sleep paralysis","E":"none of the above"},"choices":[],"video_id":"Clinical_Medicine_20","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What time period the phenomenon may have occurred?\nA. Deep sleep stages\nB. Light sleep stages\nC. REM\nD. Sleep paralysis\nE. none of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_633","media":["validation_633_0.mp4"],"messages":[{"role":"user","question":"Based on the behavior frequently exhibited by the character with grass on their head as shown in the video, which neural structure is most likely to be dysfunctional in this character?","answer":"A","hint":"","options":{"A":"Subnucleus magnocellularis of the medullary reticular formation","B":"Suprachiasmatic nucleus of the hypothalamus","C":"Ventrolateral preoptic nucleus","D":"Lateral hypothalamus producing orexin","E":"Thalamic reticular nucleus modulating sensory input"},"choices":[],"video_id":"Clinical_Medicine_20","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the behavior frequently exhibited by the character with grass on their head as shown in the video, which neural structure is most likely to be dysfunctional in this character?\nA. Subnucleus magnocellularis of the medullary reticular formation\nB. Suprachiasmatic nucleus of the hypothalamus\nC. Ventrolateral preoptic nucleus\nD. Lateral hypothalamus producing orexin\nE. Thalamic reticular nucleus modulating sensory input\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_634","media":["validation_634_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the phenomenon exhibited by the character with grass on their head most likely occurs during a certain stage of sleep. If the character (an adult) sleeps for 8 hours in one night, approximately how many minutes are spent in this sleep stage?","answer":"A","hint":"","options":{"A":"120 minutes","B":"216 minutes","C":"60 minutes","D":"180 minutes","E":"240 minutes"},"choices":[],"video_id":"Clinical_Medicine_20","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the video, the phenomenon exhibited by the character with grass on their head most likely occurs during a certain stage of sleep. If the character (an adult) sleeps for 8 hours in one night, approximately how many minutes are spent in this sleep stage?\nA. 120 minutes\nB. 216 minutes\nC. 60 minutes\nD. 180 minutes\nE. 240 minutes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_635","media":["validation_635_0.mp4"],"messages":[{"role":"user","question":"Legally, the video functions as a(n) _________, according to the principle in *Partridge v Crittenden* (1968).","answer":"invitation to treat","hint":"","options":{},"choices":[],"video_id":"Law_8","question_type":"open-ended","subject":"Law","prompt":"<video>Legally, the video functions as a(n) _________, according to the principle in *Partridge v Crittenden* (1968)."}]},{"id":"validation_636","media":["validation_636_0.mp4"],"messages":[{"role":"user","question":"In the video, the type of signal conduction is called **______** conduction.","answer":"saltatory","hint":"","options":{},"choices":[],"video_id":"Neurobiology_22","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, the type of signal conduction is called **______** conduction."}]},{"id":"validation_637","media":["validation_637_0.mp4"],"messages":[{"role":"user","question":"The worst-case inputs for the demonstrated algorithm are pairs of consecutive numbers from which famous sequence?","answer":"Fibonacci sequence","hint":"","options":{},"choices":[],"video_id":"Computer_Science_34","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The worst-case inputs for the demonstrated algorithm are pairs of consecutive numbers from which famous sequence?"}]},{"id":"validation_638","media":["validation_638_0.mp4"],"messages":[{"role":"user","question":"During the video, the autocorrelation function of the first pulse function that appears is a ___ function.","answer":"sinc","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_15","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>During the video, the autocorrelation function of the first pulse function that appears is a ___ function."}]},{"id":"validation_639","media":["validation_639_0.mp4"],"messages":[{"role":"user","question":"In the market depicted in the video, considering factors such as the relationship between buyers and sellers and the market structure, sellers are referred to as price ____ in economics.","answer":"takers","hint":"","options":{},"choices":[],"video_id":"Economics_11","question_type":"open-ended","subject":"Economics","prompt":"<video>In the market depicted in the video, considering factors such as the relationship between buyers and sellers and the market structure, sellers are referred to as price ____ in economics."}]},{"id":"validation_64","media":["validation_64_0.mp4"],"messages":[{"role":"user","question":"If the solution in the video is silver nitrate solution, what is the most likely type of reaction that would occur in the test tube?","answer":"B","hint":"","options":{"A":"Decomposition reaction","B":"Single replacement reaction","C":"Double displacement reaction","D":"Precipitation reaction","E":"Acid-base neutralization reaction"},"choices":[],"video_id":"Chemistry_1","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>If the solution in the video is silver nitrate solution, what is the most likely type of reaction that would occur in the test tube?\nA. Decomposition reaction\nB. Single replacement reaction\nC. Double displacement reaction\nD. Precipitation reaction\nE. Acid-base neutralization reaction\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_640","media":["validation_640_0.mp4"],"messages":[{"role":"user","question":"The warehouse utilizes a ________ AS/RS, which is designed for handling the shown objects in the video.","answer":"mini-load","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_22","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The warehouse utilizes a ________ AS/RS, which is designed for handling the shown objects in the video."}]},{"id":"validation_641","media":["validation_641_0.mp4"],"messages":[{"role":"user","question":"In the animation, considering the working mechanism of the cell shown in the video, it is generally believed that the function of this cell belongs to the __________ line of defense of the immune system.","answer":"second","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_21","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the animation, considering the working mechanism of the cell shown in the video, it is generally believed that the function of this cell belongs to the __________ line of defense of the immune system."}]},{"id":"validation_642","media":["validation_642_0.mp4"],"messages":[{"role":"user","question":"What are the precursors of the cells in the video?","answer":"C","hint":"","options":{"A":"Eosinophils","B":"Basophils","C":"Monocytes","D":"Primary lymphocyte","E":"Megakaryocytes"},"choices":[],"video_id":"Clinical_Medicine_21","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What are the precursors of the cells in the video?\nA. Eosinophils\nB. Basophils\nC. Monocytes\nD. Primary lymphocyte\nE. Megakaryocytes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_643","media":["validation_643_0.mp4"],"messages":[{"role":"user","question":"What kind of effect is showed in the video?","answer":"B","hint":"","options":{"A":"Lever effect","B":"Greenhouse effect","C":"Butterfly effect","D":"Doppler effect","E":"Amplification effect"},"choices":[],"video_id":"Geography_11","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What kind of effect is showed in the video?\nA. Lever effect\nB. Greenhouse effect\nC. Butterfly effect\nD. Doppler effect\nE. Amplification effect\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_644","media":["validation_644_0.mp4"],"messages":[{"role":"user","question":"In literary terms, the animated figure described in the video can be considered a _______ character.","answer":"flat","hint":"","options":{},"choices":[],"video_id":"Literature_7","question_type":"open-ended","subject":"Literature","prompt":"<video>In literary terms, the animated figure described in the video can be considered a _______ character."}]},{"id":"validation_645","media":["validation_645_0.mp4"],"messages":[{"role":"user","question":"What phenomenon of exercise is reflected in the video? ","answer":"E","hint":"","options":{"A":"Tidal wobble","B":"Geomagnetic wobble","C":"Nutation wobble","D":"Precession wobble","E":"Chandler wobble"},"choices":[],"video_id":"Geography_12","question_type":"multiple-choice","subject":"Geography","prompt":"<video>What phenomenon of exercise is reflected in the video? \nA. Tidal wobble\nB. Geomagnetic wobble\nC. Nutation wobble\nD. Precession wobble\nE. Chandler wobble\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_646","media":["validation_646_0.mp4"],"messages":[{"role":"user","question":"In the animation shown in the video, assuming the two children represent two atoms, what type of chemical bond formation is being demonstrated?","answer":"ionic bond","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_8","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>In the animation shown in the video, assuming the two children represent two atoms, what type of chemical bond formation is being demonstrated?"}]},{"id":"validation_647","media":["validation_647_0.mp4"],"messages":[{"role":"user","question":"Which type of bond is similar to the building blocks that the two boys are playing?","answer":"C","hint":"","options":{"A":"Metallic bonds","B":"Van der Waals bond","C":"Ionic bonds","D":"Covalent bonds","E":"Peptide bonds"},"choices":[],"video_id":"Modern_Physics_8","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Which type of bond is similar to the building blocks that the two boys are playing?\nA. Metallic bonds\nB. Van der Waals bond\nC. Ionic bonds\nD. Covalent bonds\nE. Peptide bonds\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_648","media":["validation_648_0.mp4"],"messages":[{"role":"user","question":"Based on the symptoms depicted in the video description, what is the character most likely suffering from?","answer":"Generalized Anxiety Disorder","hint":"","options":{},"choices":[],"video_id":"Neurobiology_23","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the symptoms depicted in the video description, what is the character most likely suffering from?"}]},{"id":"validation_649","media":["validation_649_0.mp4"],"messages":[{"role":"user","question":"Which of the following description is correct about the motion of the two sheets in the video?","answer":"E","hint":"","options":{"A":"The aluminum sheet on the right is a complete aluminum sheet. The induced current generated in the magnetic field is large, so the power it receives is large.","B":"The magnet on the left is weak and the aluminum sheet experiences weak resistance.","C":"The left aluminum sheet is a comb-shaped aluminum sheet. The induced current generated in the magnetic field is limited by the path, so it receives little resistance.","D":"The aluminum sheet on the right is a complete aluminum sheet. The induced current generated in the magnetic field is small, so the resistance it receives is small.","E":"The aluminum sheet on the right is a comb-shaped aluminum sheet. The induced eddy current is limited by the path, so it receives little resistance."},"choices":[],"video_id":"Electrical_Engineering_23","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following description is correct about the motion of the two sheets in the video?\nA. The aluminum sheet on the right is a complete aluminum sheet. The induced current generated in the magnetic field is large, so the power it receives is large.\nB. The magnet on the left is weak and the aluminum sheet experiences weak resistance.\nC. The left aluminum sheet is a comb-shaped aluminum sheet. The induced current generated in the magnetic field is limited by the path, so it receives little resistance.\nD. The aluminum sheet on the right is a complete aluminum sheet. The induced current generated in the magnetic field is small, so the resistance it receives is small.\nE. The aluminum sheet on the right is a comb-shaped aluminum sheet. The induced eddy current is limited by the path, so it receives little resistance.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_65","media":["validation_65_0.mp4"],"messages":[{"role":"user","question":"What is the reason for the change in volume of the speaker?","answer":"C","hint":"","options":{"A":"Changes in the size of the hollow coil","B":"The conductivity of the hollow coil material changes","C":"Magnetic field coupling between the hollow coil and the solid coil","D":"Temperature changes in the solid coil","E":"The power supply to the speaker is unstable"},"choices":[],"video_id":"Electromagnetism_6","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>What is the reason for the change in volume of the speaker?\nA. Changes in the size of the hollow coil\nB. The conductivity of the hollow coil material changes\nC. Magnetic field coupling between the hollow coil and the solid coil\nD. Temperature changes in the solid coil\nE. The power supply to the speaker is unstable\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_650","media":["validation_650_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following leadership styles is the businessman most likely demonstrating?","answer":"A","hint":"","options":{"A":"Democratic Leadership","B":"Laissez-faire Leadership","C":"Transactional Leadership","D":"Transformational Leadership","E":"Bureaucratic Leadership"},"choices":[],"video_id":"Management_10","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video, which of the following leadership styles is the businessman most likely demonstrating?\nA. Democratic Leadership\nB. Laissez-faire Leadership\nC. Transactional Leadership\nD. Transformational Leadership\nE. Bureaucratic Leadership\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_651","media":["validation_651_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which stage of Kolb's experiential learning cycle is the businessman most likely facilitating?","answer":"C","hint":"","options":{"A":"Concrete Experience","B":"Reflective Observation","C":"Abstract Conceptualization","D":"Active Experimentation","E":"Application of Knowledge"},"choices":[],"video_id":"Management_10","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video, which stage of Kolb's experiential learning cycle is the businessman most likely facilitating?\nA. Concrete Experience\nB. Reflective Observation\nC. Abstract Conceptualization\nD. Active Experimentation\nE. Application of Knowledge\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_652","media":["validation_652_0.mp4"],"messages":[{"role":"user","question":"The process depicted in the video, monitored in real-time by a computer, is _______.","answer":"electrospinning","hint":"","options":{},"choices":[],"video_id":"Materials_Science_9","question_type":"open-ended","subject":"Materials Science","prompt":"<video>The process depicted in the video, monitored in real-time by a computer, is _______."}]},{"id":"validation_653","media":["validation_653_0.mp4"],"messages":[{"role":"user","question":"In the video, the primary component expelled from the soil's void spaces is **____________**.","answer":"air","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_20","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the video, the primary component expelled from the soil's void spaces is **____________**."}]},{"id":"validation_654","media":["validation_654_0.mp4"],"messages":[{"role":"user","question":"What kind of the ball is in the start of the video?","answer":"E","hint":"","options":{"A":"liquid","B":"solid","C":"gas","D":"colloid","E":"None of the above"},"choices":[],"video_id":"Modern_Physics_9","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>What kind of the ball is in the start of the video?\nA. liquid\nB. solid\nC. gas\nD. colloid\nE. None of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_655","media":["validation_655_0.mp4"],"messages":[{"role":"user","question":"Based on the described animation, which phenomenon in modern physics most closely aligns with the content shown in the video?","answer":"D","hint":"","options":{"A":"Nuclear fission","B":"The photoelectric effect","C":"Classical fluid dynamics","D":"Wave-particle duality in the double-slit experiment","E":"Thermal diffusion of particles"},"choices":[],"video_id":"Modern_Physics_9","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Based on the described animation, which phenomenon in modern physics most closely aligns with the content shown in the video?\nA. Nuclear fission\nB. The photoelectric effect\nC. Classical fluid dynamics\nD. Wave-particle duality in the double-slit experiment\nE. Thermal diffusion of particles\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_656","media":["validation_656_0.mp4"],"messages":[{"role":"user","question":"The demonstrated discharge type is _________ discharge.","answer":"corona","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_26","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The demonstrated discharge type is _________ discharge."}]},{"id":"validation_657","media":["validation_657_0.mp4"],"messages":[{"role":"user","question":"Which discharge phenomenon is demonstrated?","answer":"B","hint":"","options":{"A":"Brush discharge","B":"Corona discharge","C":"Cone discharge","D":"Glow discharge","E":"High-frequency discharge"},"choices":[],"video_id":"Electromagnetism_26","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which discharge phenomenon is demonstrated?\nA. Brush discharge\nB. Corona discharge\nC. Cone discharge\nD. Glow discharge\nE. High-frequency discharge\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_658","media":["validation_658_0.mp4"],"messages":[{"role":"user","question":"In the described setup, the device simulates of a(n) **____**.","answer":"Gauss gun","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_24","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the described setup, the device simulates of a(n) **____**."}]},{"id":"validation_659","media":["validation_659_0.mp4"],"messages":[{"role":"user","question":"What kind of energy transformation occurs in the video?","answer":"A","hint":"","options":{"A":"The potential energy of the steel ball in the magnetic field is converted into kinetic energy.","B":"The potential energy of the steel ball in the magnetic field is converted into gravitational potential energy.","C":"The gravitational potential energy of the steel ball is converted into kinetic energy and thermal energy.","D":"The potential energy of the steel ball in the magnetic field is converted into kinetic energy and gravitational potential energy.","E":"The gravitational potential energy of the steel ball is converted into heat energy."},"choices":[],"video_id":"Electrical_Engineering_24","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What kind of energy transformation occurs in the video?\nA. The potential energy of the steel ball in the magnetic field is converted into kinetic energy.\nB. The potential energy of the steel ball in the magnetic field is converted into gravitational potential energy.\nC. The gravitational potential energy of the steel ball is converted into kinetic energy and thermal energy.\nD. The potential energy of the steel ball in the magnetic field is converted into kinetic energy and gravitational potential energy.\nE. The gravitational potential energy of the steel ball is converted into heat energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_66","media":["validation_66_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the phenomenon of decreasing audio output volume when a white ring is inserted into a copper coil?","answer":"A","hint":"","options":{"A":"The induced current in the white ring opposes the change in the coil's magnetic field, increasing the coil's impedance, and decreasing the audio output volume.","B":"The white ring acts as a magnetic core, increasing the coil's inductance and allowing more current to flow from the audio player, thereby increasing the audio output volume.","C":"The insertion of the white ring creates a capacitive coupling that forms a resonant LC circuit with the coil, amplifying the audio output volume.","D":"The white ring decreases the coil's resistance when inserted, resulting in increased current from the audio player and a higher audio output volume.","E":"The observed decrease in audio output volume is due to an unrelated fluctuation in the audio player's output coinciding with the insertion of the white ring."},"choices":[],"video_id":"Electromagnetism_6","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the phenomenon of decreasing audio output volume when a white ring is inserted into a copper coil?\nA. The induced current in the white ring opposes the change in the coil's magnetic field, increasing the coil's impedance, and decreasing the audio output volume.\nB. The white ring acts as a magnetic core, increasing the coil's inductance and allowing more current to flow from the audio player, thereby increasing the audio output volume.\nC. The insertion of the white ring creates a capacitive coupling that forms a resonant LC circuit with the coil, amplifying the audio output volume.\nD. The white ring decreases the coil's resistance when inserted, resulting in increased current from the audio player and a higher audio output volume.\nE. The observed decrease in audio output volume is due to an unrelated fluctuation in the audio player's output coinciding with the insertion of the white ring.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_660","media":["validation_660_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the observed phenomenon in the video?","answer":"E","hint":"","options":{"A":"Gravitational potential energy is converted into kinetic energy due to the incline of the neck, causing the balls to roll and collide.","B":"The red line acts as a conductive path for electrical current, creating a magnetic field that propels the balls via electromagnetic induction.","C":"Elastic collisions between stationary and moving metal balls transfer kinetic energy sequentially, similar to a Newton's cradle.","D":"An external magnetic field applied along the neck magnetizes the balls, causing them to repel each other and propel the last ball.","E":"Magnetic potential energy stored in the aligned magnetic metal balls is converted into kinetic energy, accelerating the balls."},"choices":[],"video_id":"Electrical_Engineering_24","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following best explains the observed phenomenon in the video?\nA. Gravitational potential energy is converted into kinetic energy due to the incline of the neck, causing the balls to roll and collide.\nB. The red line acts as a conductive path for electrical current, creating a magnetic field that propels the balls via electromagnetic induction.\nC. Elastic collisions between stationary and moving metal balls transfer kinetic energy sequentially, similar to a Newton's cradle.\nD. An external magnetic field applied along the neck magnetizes the balls, causing them to repel each other and propel the last ball.\nE. Magnetic potential energy stored in the aligned magnetic metal balls is converted into kinetic energy, accelerating the balls.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_661","media":["validation_661_0.mp4"],"messages":[{"role":"user","question":"How did the equivalent spring constant of the system change in the second experiment compared to the first experiment?","answer":"decreased","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_23","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>How did the equivalent spring constant of the system change in the second experiment compared to the first experiment?"}]},{"id":"validation_662","media":["validation_662_0.mp4"],"messages":[{"role":"user","question":"How does the equivalent spring constant of the single-degree-of-freedom system shown in the video change?","answer":"B","hint":"","options":{"A":"First remain unchanged then decrease","B":"Both times decreased","C":"First decrease and then increase","D":"Both times increased","E":"First increase and then decrease"},"choices":[],"video_id":"Mechanical_Engineering_23","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>How does the equivalent spring constant of the single-degree-of-freedom system shown in the video change?\nA. First remain unchanged then decrease\nB. Both times decreased\nC. First decrease and then increase\nD. Both times increased\nE. First increase and then decrease\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_663","media":["validation_663_0.mp4"],"messages":[{"role":"user","question":"Keeping the magnitude of the applied force constant, which of the following best describes the change in the natural frequency and the maximum deflection at the free end of the ruler in the third experiment, compared to the first experiment?","answer":"B","hint":"","options":{"A":"The natural frequency increases, and the maximum deflection decreases.","B":"The natural frequency decreases, and the maximum deflection increases.","C":"The natural frequency decreases, but the maximum deflection decreases.","D":"The natural frequency increases, but the maximum deflection increases.","E":"Both the natural frequency and maximum deflection remain unchanged."},"choices":[],"video_id":"Mechanical_Engineering_23","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Keeping the magnitude of the applied force constant, which of the following best describes the change in the natural frequency and the maximum deflection at the free end of the ruler in the third experiment, compared to the first experiment?\nA. The natural frequency increases, and the maximum deflection decreases.\nB. The natural frequency decreases, and the maximum deflection increases.\nC. The natural frequency decreases, but the maximum deflection decreases.\nD. The natural frequency increases, but the maximum deflection increases.\nE. Both the natural frequency and maximum deflection remain unchanged.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_664","media":["validation_664_0.mp4"],"messages":[{"role":"user","question":"Which of the following modifications would decrease the first natural frequency of vibrations in the video while simultaneously increasing the maximum bending stress at the fixed end during deflection?","answer":"D","hint":"","options":{"A":"Decrease the overhanging length and increase the thickness of the ruler.","B":"Increase the overhanging length and decrease the density of the ruler's material.","C":"Increase the overhanging length and increase the width of the ruler.","D":"Increase the overhanging length and decrease the thickness of the ruler.","E":"Decrease the overhanging length and increase the density of the ruler's material."},"choices":[],"video_id":"Mechanical_Engineering_23","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following modifications would decrease the first natural frequency of vibrations in the video while simultaneously increasing the maximum bending stress at the fixed end during deflection?\nA. Decrease the overhanging length and increase the thickness of the ruler.\nB. Increase the overhanging length and decrease the density of the ruler's material.\nC. Increase the overhanging length and increase the width of the ruler.\nD. Increase the overhanging length and decrease the thickness of the ruler.\nE. Decrease the overhanging length and increase the density of the ruler's material.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_665","media":["validation_665_0.mp4"],"messages":[{"role":"user","question":"In the video, the yellow blob-like object most likely represents an **__________**.","answer":"atherosclerotic plaque","hint":"","options":{},"choices":[],"video_id":"Pharmacy_18","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>In the video, the yellow blob-like object most likely represents an **__________**."}]},{"id":"validation_666","media":["validation_666_0.mp4"],"messages":[{"role":"user","question":"According to Gale–Shapley algorithm, which boy is matched with girl C?","answer":"Boy 4","hint":"","options":{},"choices":[],"video_id":"Computer_Science_35","question_type":"open-ended","subject":"Computer Science","prompt":"<video>According to Gale–Shapley algorithm, which boy is matched with girl C?"}]},{"id":"validation_667","media":["validation_667_0.mp4"],"messages":[{"role":"user","question":"In the disease shown in the video, the function of the ________ sphincter is impaired.","answer":"lower esophageal","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_22","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the disease shown in the video, the function of the ________ sphincter is impaired."}]},{"id":"validation_668","media":["validation_668_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following climatic feedback mechanisms is most likely being illustrated?","answer":"B","hint":"","options":{"A":"Negative feedback loop where increased evaporation leads to more cloud formation, reflecting sunlight.","B":"Positive feedback loop where reduced cloud cover decreases Earth's albedo, causing additional warming.","C":"Negative feedback loop where increased CO₂ stimulates plant growth, enhancing carbon sequestration.","D":"Positive feedback loop where reduced forest vegetation decreases transpiration, lowers local rainfall, and exacerbates forest dieback.","E":"Negative feedback loop where river flooding brings sediment deposition, improving soil fertility in riverine areas, promoting vegetation recovery, and reducing the occurrence of floods."},"choices":[],"video_id":"Geography_13","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the video description, which of the following climatic feedback mechanisms is most likely being illustrated?\nA. Negative feedback loop where increased evaporation leads to more cloud formation, reflecting sunlight.\nB. Positive feedback loop where reduced cloud cover decreases Earth's albedo, causing additional warming.\nC. Negative feedback loop where increased CO₂ stimulates plant growth, enhancing carbon sequestration.\nD. Positive feedback loop where reduced forest vegetation decreases transpiration, lowers local rainfall, and exacerbates forest dieback.\nE. Negative feedback loop where river flooding brings sediment deposition, improving soil fertility in riverine areas, promoting vegetation recovery, and reducing the occurrence of floods.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_669","media":["validation_669_0.mp4"],"messages":[{"role":"user","question":"The yellow granular substance in video is secreted by the **_____** cells.","answer":"parietal","hint":"","options":{},"choices":[],"video_id":"Pharmacy_19","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>The yellow granular substance in video is secreted by the **_____** cells."}]},{"id":"validation_67","media":["validation_67_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the observed decrease in audio output volume?","answer":"B","hint":"","options":{"A":"Inserting the white ring into the coil increases the coil's self-inductance, decreasing its impedance and causing more current to flow, which the audio player cannot sustain, thus reducing the output volume.","B":"The induced current in the white ring creates a magnetic field opposing the coil's magnetic field, effectively increasing the coil's impedance, and decreasing the audio output volume.","C":"The white ring forms a resonant LC circuit with the coil, causing resonance at certain frequencies that attenuate the audio signal, resulting in decreased output volume.","D":"Energy is transferred from the coil to the white ring through mutual inductance, with the ring dissipating energy as heat, thereby reducing the power available for audio output.","E":"Eddy currents induced in the white ring reinforce the coil's magnetic field, increasing back electromotive force (back EMF) in the coil, which reduces the current from the audio player and decreases the audio output volume."},"choices":[],"video_id":"Electromagnetism_6","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the observed decrease in audio output volume?\nA. Inserting the white ring into the coil increases the coil's self-inductance, decreasing its impedance and causing more current to flow, which the audio player cannot sustain, thus reducing the output volume.\nB. The induced current in the white ring creates a magnetic field opposing the coil's magnetic field, effectively increasing the coil's impedance, and decreasing the audio output volume.\nC. The white ring forms a resonant LC circuit with the coil, causing resonance at certain frequencies that attenuate the audio signal, resulting in decreased output volume.\nD. Energy is transferred from the coil to the white ring through mutual inductance, with the ring dissipating energy as heat, thereby reducing the power available for audio output.\nE. Eddy currents induced in the white ring reinforce the coil's magnetic field, increasing back electromotive force (back EMF) in the coil, which reduces the current from the audio player and decreases the audio output volume.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_670","media":["validation_670_0.mp4"],"messages":[{"role":"user","question":"How does the optical path difference changes in the video?","answer":"C","hint":"","options":{"A":"Bigger first, then smaller","B":"Smaller first, then bigger","C":"Oscillates between bigger and smaller","D":"Bigger","E":"Smaller"},"choices":[],"video_id":"Modern_Physics_10","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>How does the optical path difference changes in the video?\nA. Bigger first, then smaller\nB. Smaller first, then bigger\nC. Oscillates between bigger and smaller\nD. Bigger\nE. Smaller\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_671","media":["validation_671_0.mp4"],"messages":[{"role":"user","question":"In the video, a red laser beam is directed onto a frosted acrylic sheet placed on a metal table. Which physical phenomenon best explains the pattern observed on the acrylic sheet?","answer":"E","hint":"","options":{"A":"Refraction of light within the acrylic causing lensing effects","B":"Total internal reflection within the acrylic sheet","C":"Scattering of light by the frosted surface causing diffuse reflection","D":"Polarization of light due to birefringence in the acrylic","E":"Diffraction of light leading to an Airy pattern"},"choices":[],"video_id":"Modern_Physics_10","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>In the video, a red laser beam is directed onto a frosted acrylic sheet placed on a metal table. Which physical phenomenon best explains the pattern observed on the acrylic sheet?\nA. Refraction of light within the acrylic causing lensing effects\nB. Total internal reflection within the acrylic sheet\nC. Scattering of light by the frosted surface causing diffuse reflection\nD. Polarization of light due to birefringence in the acrylic\nE. Diffraction of light leading to an Airy pattern\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_672","media":["validation_672_0.mp4"],"messages":[{"role":"user","question":"In the video, a red laser beam is directed onto a frosted acrylic sheet placed on a metal table. According to modern physics principles, which fundamental principle does this experimental setup and its effect directly demonstrate?","answer":"A","hint":"","options":{"A":"The Heisenberg Uncertainty Principle, illustrating the trade-off between position and momentum uncertainties.","B":"The Photoelectric Effect, where photons eject electrons from the surface.","C":"Einstein's Theory of Special Relativity, showing time dilation effects at high speeds.","D":"Blackbody Radiation Law, explaining energy distribution at different wavelengths.","E":"The Pauli Exclusion Principle, preventing identical fermions from occupying the same quantum state."},"choices":[],"video_id":"Modern_Physics_10","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>In the video, a red laser beam is directed onto a frosted acrylic sheet placed on a metal table. According to modern physics principles, which fundamental principle does this experimental setup and its effect directly demonstrate?\nA. The Heisenberg Uncertainty Principle, illustrating the trade-off between position and momentum uncertainties.\nB. The Photoelectric Effect, where photons eject electrons from the surface.\nC. Einstein's Theory of Special Relativity, showing time dilation effects at high speeds.\nD. Blackbody Radiation Law, explaining energy distribution at different wavelengths.\nE. The Pauli Exclusion Principle, preventing identical fermions from occupying the same quantum state.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_673","media":["validation_673_0.mp4"],"messages":[{"role":"user","question":"In the video, the androgen responsible for male hair is **________**.","answer":"Dihydrotestosterone","hint":"","options":{},"choices":[],"video_id":"Pharmacy_20","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>In the video, the androgen responsible for male hair is **________**."}]},{"id":"validation_674","media":["validation_674_0.mp4"],"messages":[{"role":"user","question":"In the video demonstration, the primary mode of heat transfer is **___**.","answer":"conduction","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_8","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>In the video demonstration, the primary mode of heat transfer is **___**."}]},{"id":"validation_675","media":["validation_675_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which human chromosome is the disease associated with?","answer":"E","hint":"","options":{"A":"Chromosome 3","B":"Chromosome 15","C":"Chromosome 17","D":"Chromosome 18","E":"Chromosome 21"},"choices":[],"video_id":"Basic_Medicine_19","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Based on the video, which human chromosome is the disease associated with?\nA. Chromosome 3\nB. Chromosome 15\nC. Chromosome 17\nD. Chromosome 18\nE. Chromosome 21\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_676","media":["validation_676_0.mp4"],"messages":[{"role":"user","question":"The algorithm shown in the video is called ____.","answer":"insertion sort","hint":"","options":{},"choices":[],"video_id":"Computer_Science_36","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm shown in the video is called ____."}]},{"id":"validation_677","media":["validation_677_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements best describes the algorithm used in the video?","answer":"D","hint":"","options":{"A":"The algorithm builds a max heap from the unsorted data and repeatedly extracts the maximum element to build the sorted sequence.","B":"The algorithm recursively divides the array into halves, sorts each half, and then merges the sorted halves.","C":"The algorithm compares adjacent elements and swaps them if they are in the wrong order, causing larger elements to 'bubble up' to their correct positions.","D":"The algorithm builds the sorted sequence one element at a time by inserting each element into its correct position within the already sorted part of the array.","E":"The algorithm selects a pivot element and partitions the array into elements less than and greater than the pivot, recursively applying the same strategy to subarrays."},"choices":[],"video_id":"Computer_Science_36","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements best describes the algorithm used in the video?\nA. The algorithm builds a max heap from the unsorted data and repeatedly extracts the maximum element to build the sorted sequence.\nB. The algorithm recursively divides the array into halves, sorts each half, and then merges the sorted halves.\nC. The algorithm compares adjacent elements and swaps them if they are in the wrong order, causing larger elements to 'bubble up' to their correct positions.\nD. The algorithm builds the sorted sequence one element at a time by inserting each element into its correct position within the already sorted part of the array.\nE. The algorithm selects a pivot element and partitions the array into elements less than and greater than the pivot, recursively applying the same strategy to subarrays.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_678","media":["validation_678_0.mp4"],"messages":[{"role":"user","question":"In the video, the biomaterial is often used in surgical settings as a(n) **______** agent.","answer":"haemostatic","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_16","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the biomaterial is often used in surgical settings as a(n) **______** agent."}]},{"id":"validation_679","media":["validation_679_0.mp4"],"messages":[{"role":"user","question":"What biomaterial is shown in the video?","answer":"D","hint":"","options":{"A":"Adipose cell","B":"Keratin","C":"DNA adjuvant","D":"Collagen","E":"Bioplastics"},"choices":[],"video_id":"Biomedical_Engineering_16","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What biomaterial is shown in the video?\nA. Adipose cell\nB. Keratin\nC. DNA adjuvant\nD. Collagen\nE. Bioplastics\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_68","media":["validation_68_0.mp4"],"messages":[{"role":"user","question":"Which of the following expressions best represents the new impedance Z_total seen by the audio player when the ring is inserted?","answer":"C","hint":"","options":{"A":"Z_total = jω (L_1 + L_2)","B":"Z_total = jω L_1 + R_2","C":"Z_total = jω L_1 + (ω M)^2/R_2","D":"Z_total = jω L_1 - (ω M)^2/R_2","E":"Z_total = jω (L_1 - M^2/L_2)"},"choices":[],"video_id":"Electromagnetism_6","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following expressions best represents the new impedance Z_total seen by the audio player when the ring is inserted?\nA. Z_total = jω (L_1 + L_2)\nB. Z_total = jω L_1 + R_2\nC. Z_total = jω L_1 + (ω M)^2/R_2\nD. Z_total = jω L_1 - (ω M)^2/R_2\nE. Z_total = jω (L_1 - M^2/L_2)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_680","media":["validation_680_0.mp4"],"messages":[{"role":"user","question":"What are the clinical features or complications of the disease shown in the video?","answer":"B","hint":"","options":{"A":"Oliguria, azotemia, hyperkalemia, metabolic acidosis","B":"Hematuria, flank pain, urinary tract infection, renal stones, hypertension","C":"Hemorrhage, erythrocytosis, neoplasia","D":"Proteinuria, nephrotic syndrome, hypoalbuminemia, edema","E":"Salt wasting, polyuria, growth retardation, anemia"},"choices":[],"video_id":"Basic_Medicine_20","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What are the clinical features or complications of the disease shown in the video?\nA. Oliguria, azotemia, hyperkalemia, metabolic acidosis\nB. Hematuria, flank pain, urinary tract infection, renal stones, hypertension\nC. Hemorrhage, erythrocytosis, neoplasia\nD. Proteinuria, nephrotic syndrome, hypoalbuminemia, edema\nE. Salt wasting, polyuria, growth retardation, anemia\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_681","media":["validation_681_0.mp4"],"messages":[{"role":"user","question":"The process illustrates the _____ theory explaining the origin of certain organelles.","answer":"endosymbiotic","hint":"","options":{},"choices":[],"video_id":"Biology_6","question_type":"open-ended","subject":"Biology","prompt":"<video>The process illustrates the _____ theory explaining the origin of certain organelles."}]},{"id":"validation_682","media":["validation_682_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, the south side is termed an **_______** slope.","answer":"unrestrained","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_21","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>Based on the video description, the south side is termed an **_______** slope."}]},{"id":"validation_683","media":["validation_683_0.mp4"],"messages":[{"role":"user","question":"What method is shown in the video?","answer":"C","hint":"","options":{"A":"Intramuscular injection","B":"Mucosal administration","C":"Transdermal administration","D":"Inhalation administration","E":"Intravenous injection"},"choices":[],"video_id":"Pharmacy_21","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>What method is shown in the video?\nA. Intramuscular injection\nB. Mucosal administration\nC. Transdermal administration\nD. Inhalation administration\nE. Intravenous injection\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_684","media":["validation_684_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following best explains the healthcare professional's behaviour?","answer":"C","hint":"","options":{"A":"To stimulate blood circulation and enhance absorption of the lotion.","B":"To follow the natural lines of the skin and prevent skin irritation.","C":"To ensure even distribution and promote transdermal absorption of the active ingredient.","D":"To perform a lymphatic drainage massage along with lotion application.","E":"To relax the patient through sensory stimulation during application."},"choices":[],"video_id":"Pharmacy_21","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the video, which of the following best explains the healthcare professional's behaviour?\nA. To stimulate blood circulation and enhance absorption of the lotion.\nB. To follow the natural lines of the skin and prevent skin irritation.\nC. To ensure even distribution and promote transdermal absorption of the active ingredient.\nD. To perform a lymphatic drainage massage along with lotion application.\nE. To relax the patient through sensory stimulation during application.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_685","media":["validation_685_0.mp4"],"messages":[{"role":"user","question":"Which physical principle best explains why the coin falls into the mug?","answer":"C","hint":"","options":{"A":"The conservation of energy requires the coin to fall into the mug when the supporting card is removed.","B":"The friction between the coin and the card causes the coin to accelerate downward into the mug.","C":"The inertia of the coin keeps it at rest while the card is quickly removed, resulting in the coin falling straight down due to gravity.","D":"The air resistance acting on the card transfers momentum to the coin, causing it to fall into the mug.","E":"The decrease in air pressure beneath the coin when the card is removed causes the coin to be pushed into the mug."},"choices":[],"video_id":"Mechanics_24","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which physical principle best explains why the coin falls into the mug?\nA. The conservation of energy requires the coin to fall into the mug when the supporting card is removed.\nB. The friction between the coin and the card causes the coin to accelerate downward into the mug.\nC. The inertia of the coin keeps it at rest while the card is quickly removed, resulting in the coin falling straight down due to gravity.\nD. The air resistance acting on the card transfers momentum to the coin, causing it to fall into the mug.\nE. The decrease in air pressure beneath the coin when the card is removed causes the coin to be pushed into the mug.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_686","media":["validation_686_0.mp4"],"messages":[{"role":"user","question":"The visual effects are based on the phenomenon known as **______**.","answer":"persistence of vision","hint":"","options":{},"choices":[],"video_id":"Art_10","question_type":"open-ended","subject":"Art","prompt":"<video>The visual effects are based on the phenomenon known as **______**."}]},{"id":"validation_687","media":["validation_687_0.mp4"],"messages":[{"role":"user","question":"Which of the following art movements does this device most closely align with?","answer":"E","hint":"","options":{"A":"Impressionism","B":"Cubism","C":"Op Art","D":"Minimalism","E":"Kinetic Art"},"choices":[],"video_id":"Art_10","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which of the following art movements does this device most closely align with?\nA. Impressionism\nB. Cubism\nC. Op Art\nD. Minimalism\nE. Kinetic Art\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_688","media":["validation_688_0.mp4"],"messages":[{"role":"user","question":"During the video, an application example of the ____ theorem is demonstrated.","answer":"Nyquist–Shannon sampling","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_16","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>During the video, an application example of the ____ theorem is demonstrated."}]},{"id":"validation_689","media":["validation_689_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about the experiment in the video is true?","answer":"E","hint":"","options":{"A":"Two aluminum tubes are pulled in opposite directions.","B":"Two aluminum tubes are exposed to magnetic forces in the same direction in the same magnetic field.","C":"Two aluminum tubes carry current in the same direction.","D":"Two aluminum tubes are subjected to wind forces in opposite directions.","E":"Two aluminum tubes carry current in opposite directions."},"choices":[],"video_id":"Electrical_Engineering_25","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following statements about the experiment in the video is true?\nA. Two aluminum tubes are pulled in opposite directions.\nB. Two aluminum tubes are exposed to magnetic forces in the same direction in the same magnetic field.\nC. Two aluminum tubes carry current in the same direction.\nD. Two aluminum tubes are subjected to wind forces in opposite directions.\nE. Two aluminum tubes carry current in opposite directions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_69","media":["validation_69_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which of the following strategies is the company most likely adopting?","answer":"B","hint":"","options":{"A":"Global Standardization Strategy","B":"Transnational Strategy","C":"Localization Strategy","D":"Multi-Domestic Strategy","E":"Export Strategy"},"choices":[],"video_id":"Management_1","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video description, which of the following strategies is the company most likely adopting?\nA. Global Standardization Strategy\nB. Transnational Strategy\nC. Localization Strategy\nD. Multi-Domestic Strategy\nE. Export Strategy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_690","media":["validation_690_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the observed phenomenon?","answer":"A","hint":"","options":{"A":"The rods carry electric currents in opposite directions, resulting in a repulsive magnetic force between them according to Ampère's force law.","B":"The rods carry electric currents in the same direction, resulting in an attractive magnetic force between them according to Ampère's force law.","C":"The rods become similarly charged due to static electricity, causing them to repel each other according to Coulomb's law.","D":"The rods induce opposing currents in each other due to electromagnetic induction, leading to repulsion as described by Lenz's law.","E":"The rods create eddy currents in a surrounding magnetic field, causing a repulsive force according to Faraday's law of induction."},"choices":[],"video_id":"Electrical_Engineering_25","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following best explains the observed phenomenon?\nA. The rods carry electric currents in opposite directions, resulting in a repulsive magnetic force between them according to Ampère's force law.\nB. The rods carry electric currents in the same direction, resulting in an attractive magnetic force between them according to Ampère's force law.\nC. The rods become similarly charged due to static electricity, causing them to repel each other according to Coulomb's law.\nD. The rods induce opposing currents in each other due to electromagnetic induction, leading to repulsion as described by Lenz's law.\nE. The rods create eddy currents in a surrounding magnetic field, causing a repulsive force according to Faraday's law of induction.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_691","media":["validation_691_0.mp4"],"messages":[{"role":"user","question":"Based on the scenario presented in the video, which of the following public health interventions should be implemented soonest?","answer":"C","hint":"","options":{"A":"Vaccinate all domestic animals in the vicinity.","B":"Require all local residents to wear protective clothing.","C":"Report the suspected case to public health authorities immediately.","D":"Begin environmental decontamination procedures.","E":"Launch a community awareness campaign about pet nutrition."},"choices":[],"video_id":"Preventive_Medicine_9","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Based on the scenario presented in the video, which of the following public health interventions should be implemented soonest?\nA. Vaccinate all domestic animals in the vicinity.\nB. Require all local residents to wear protective clothing.\nC. Report the suspected case to public health authorities immediately.\nD. Begin environmental decontamination procedures.\nE. Launch a community awareness campaign about pet nutrition.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_692","media":["validation_692_0.mp4"],"messages":[{"role":"user","question":"Which of the following diseases is the most likely cause of this condition?","answer":"B","hint":"","options":{"A":"Brucellosis","B":"Rabies","C":"Toxoplasmosis","D":"Leptospirosis","E":"Anthrax"},"choices":[],"video_id":"Preventive_Medicine_9","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following diseases is the most likely cause of this condition?\nA. Brucellosis\nB. Rabies\nC. Toxoplasmosis\nD. Leptospirosis\nE. Anthrax\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_693","media":["validation_693_0.mp4"],"messages":[{"role":"user","question":"In the video, the drilling rig is called ___","answer":"boreholes","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_22","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the video, the drilling rig is called ___"}]},{"id":"validation_694","media":["validation_694_0.mp4"],"messages":[{"role":"user","question":"In the experiment, the object that reaches the bottom first is the **______**.","answer":"cylinder","hint":"","options":{},"choices":[],"video_id":"Mechanics_25","question_type":"open-ended","subject":"Mechanics","prompt":"<video>In the experiment, the object that reaches the bottom first is the **______**."}]},{"id":"validation_695","media":["validation_695_0.mp4"],"messages":[{"role":"user","question":"Ignoring the air resistance, what is correct with the motion of the disc and ring in the video?","answer":"C","hint":"","options":{"A":"The weight of the disc affects its motion the most.","B":"The disc moves for a longer duration compared to the ring.","C":"The ring experiences gravity and friction during its motion.","D":"The disc accelerates upward along the slope.","E":"The ring accelerates more quickly due to having less surface contact."},"choices":[],"video_id":"Mechanics_25","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Ignoring the air resistance, what is correct with the motion of the disc and ring in the video?\nA. The weight of the disc affects its motion the most.\nB. The disc moves for a longer duration compared to the ring.\nC. The ring experiences gravity and friction during its motion.\nD. The disc accelerates upward along the slope.\nE. The ring accelerates more quickly due to having less surface contact.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_696","media":["validation_696_0.mp4"],"messages":[{"role":"user","question":"In the video, when the laser passes through the plastic block, the phenomenon of ______ occurs.","answer":"diffraction","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_11","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>In the video, when the laser passes through the plastic block, the phenomenon of ______ occurs."}]},{"id":"validation_697","media":["validation_697_0.mp4"],"messages":[{"role":"user","question":"Patients with a certain kind of disease, as depicted in the video, are at increased risk of developing ____ adenocarcinoma.","answer":"esophageal","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_23","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Patients with a certain kind of disease, as depicted in the video, are at increased risk of developing ____ adenocarcinoma."}]},{"id":"validation_698","media":["validation_698_0.mp4"],"messages":[{"role":"user","question":"The demonstrated data structure is __________.","answer":"Linked list","hint":"","options":{},"choices":[],"video_id":"Computer_Science_37","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The demonstrated data structure is __________."}]},{"id":"validation_699","media":["validation_699_0.mp4"],"messages":[{"role":"user","question":"what kind of data structure is looked like the simulation in the video?","answer":"B","hint":"","options":{"A":"AVL tree","B":"Linked list","C":"Binary search tree","D":"Graph","E":"Heap"},"choices":[],"video_id":"Computer_Science_37","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>what kind of data structure is looked like the simulation in the video?\nA. AVL tree\nB. Linked list\nC. Binary search tree\nD. Graph\nE. Heap\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_7","media":["validation_7_0.mp4"],"messages":[{"role":"user","question":"What kind of filter is the circuit implemented?","answer":"High-pass filter","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_0","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>What kind of filter is the circuit implemented?"}]},{"id":"validation_70","media":["validation_70_0.mp4"],"messages":[{"role":"user","question":"When the phenomenon in the video occurs, which of the following options is the most important to adjust?","answer":"A","hint":"","options":{"A":"Renin-angiotensin system","B":"Hypothalamic-pituitary-thyroid axis","C":"Adrenaline and norepinephrine","D":"Melatonin secretion","E":"Sodium-potassium pump activity"},"choices":[],"video_id":"Clinical_Medicine_2","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>When the phenomenon in the video occurs, which of the following options is the most important to adjust?\nA. Renin-angiotensin system\nB. Hypothalamic-pituitary-thyroid axis\nC. Adrenaline and norepinephrine\nD. Melatonin secretion\nE. Sodium-potassium pump activity\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_700","media":["validation_700_0.mp4"],"messages":[{"role":"user","question":"Which of the following drugs can suppress the symptoms in the video?","answer":"A","hint":"","options":{"A":"Glycopyrrolate","B":"Amoxicillin","C":"Ibuprofen","D":"Aspirin","E":"Lisinopril"},"choices":[],"video_id":"Pharmacy_22","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following drugs can suppress the symptoms in the video?\nA. Glycopyrrolate\nB. Amoxicillin\nC. Ibuprofen\nD. Aspirin\nE. Lisinopril\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_701","media":["validation_701_0.mp4"],"messages":[{"role":"user","question":"The minimum degree t of the shown data stucture is ______.","answer":"2","hint":"","options":{},"choices":[],"video_id":"Computer_Science_38","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The minimum degree t of the shown data stucture is ______."}]},{"id":"validation_702","media":["validation_702_0.mp4"],"messages":[{"role":"user","question":"In the video, the modulation index of the FM signal is ____.","answer":"2.5","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_17","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>In the video, the modulation index of the FM signal is ____."}]},{"id":"validation_703","media":["validation_703_0.mp4"],"messages":[{"role":"user","question":"Which of the following best describes the nature of the modulated signal produced under these settings in the video?","answer":"E","hint":"","options":{"A":"An FM signal whose spectrum contains only the carrier and sidebands at multiples of the modulating frequency.","B":"An AM signal with a carrier frequency of 500 kHz and a modulating frequency of 20 kHz.","C":"A PM (Phase Modulated) signal with a square wave modulating signal.","D":"A continuous-wave FM signal with a sinusoidal modulating signal.","E":"A signal that alternates between two discrete frequencies, effectively creating an FSK signal at 450 kHz and 550 kHz."},"choices":[],"video_id":"Electronics_and_Communication_17","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which of the following best describes the nature of the modulated signal produced under these settings in the video?\nA. An FM signal whose spectrum contains only the carrier and sidebands at multiples of the modulating frequency.\nB. An AM signal with a carrier frequency of 500 kHz and a modulating frequency of 20 kHz.\nC. A PM (Phase Modulated) signal with a square wave modulating signal.\nD. A continuous-wave FM signal with a sinusoidal modulating signal.\nE. A signal that alternates between two discrete frequencies, effectively creating an FSK signal at 450 kHz and 550 kHz.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_704","media":["validation_704_0.mp4"],"messages":[{"role":"user","question":"Based on the footage shown in the video, which type of shutter is most likely used by the camera?","answer":"rolling shutter","hint":"","options":{},"choices":[],"video_id":"Art_11","question_type":"open-ended","subject":"Art","prompt":"<video>Based on the footage shown in the video, which type of shutter is most likely used by the camera?"}]},{"id":"validation_705","media":["validation_705_0.mp4"],"messages":[{"role":"user","question":"According to the principles of special relativity, if the final length  L  of the spacecraft shown in the video is 4 m, the speed ‘v’ of the spacecraft relative to Earth is approximately _______ c (to three decimal places).","answer":"0.866 c","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_12","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>According to the principles of special relativity, if the final length  L  of the spacecraft shown in the video is 4 m, the speed ‘v’ of the spacecraft relative to Earth is approximately _______ c (to three decimal places)."}]},{"id":"validation_706","media":["validation_706_0.mp4"],"messages":[{"role":"user","question":"The animal in the video is demonstrating an adaptation known as **__________**.","answer":"Crypsis","hint":"","options":{},"choices":[],"video_id":"Biology_7","question_type":"open-ended","subject":"Biology","prompt":"<video>The animal in the video is demonstrating an adaptation known as **__________**."}]},{"id":"validation_707","media":["validation_707_0.mp4"],"messages":[{"role":"user","question":"What kind of coloration is shown in the video?","answer":"E","hint":"","options":{"A":"Mullerian mimicry","B":"polymorphism","C":"aposematism","D":"Batesian mimicry","E":"crypsis"},"choices":[],"video_id":"Biology_7","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What kind of coloration is shown in the video?\nA. Mullerian mimicry\nB. polymorphism\nC. aposematism\nD. Batesian mimicry\nE. crypsis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_708","media":["validation_708_0.mp4"],"messages":[{"role":"user","question":"Which combination of specialized cells and structures allows the bahavior of the animal?","answer":"D","hint":"","options":{"A":"Melanophores and neuromasts","B":"Iridophores and statocysts","C":"Photophores and hydrostatic skeleton","D":"Chromatophores and dermal papillae","E":"Melanocytes and osteoderms"},"choices":[],"video_id":"Biology_7","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Which combination of specialized cells and structures allows the bahavior of the animal?\nA. Melanophores and neuromasts\nB. Iridophores and statocysts\nC. Photophores and hydrostatic skeleton\nD. Chromatophores and dermal papillae\nE. Melanocytes and osteoderms\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_709","media":["validation_709_0.mp4"],"messages":[{"role":"user","question":"The phenomenon illustrated in the video, is called a gene ______.","answer":"drive","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_17","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>The phenomenon illustrated in the video, is called a gene ______."}]},{"id":"validation_71","media":["validation_71_0.mp4"],"messages":[{"role":"user","question":"The physical instrument utilized in the experiment is called ________.","answer":"electroscope","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_7","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The physical instrument utilized in the experiment is called ________."}]},{"id":"validation_710","media":["validation_710_0.mp4"],"messages":[{"role":"user","question":"What phenomenon is reflected in the video?","answer":"C","hint":"","options":{"A":"Heterogeneous transmission","B":"Geographical isolation","C":"Gene drive","D":"Natural selection","E":"Climate impact"},"choices":[],"video_id":"Biomedical_Engineering_17","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What phenomenon is reflected in the video?\nA. Heterogeneous transmission\nB. Geographical isolation\nC. Gene drive\nD. Natural selection\nE. Climate impact\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_711","media":["validation_711_0.mp4"],"messages":[{"role":"user","question":"Which metric is used to measure slope stability of different materials in the video?","answer":"D","hint":"","options":{"A":"cohesion coefficient","B":"slope geometry","C":"soil properties","D":"angle","E":"plasticity index"},"choices":[],"video_id":"Civil_Engineering_23","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Which metric is used to measure slope stability of different materials in the video?\nA. cohesion coefficient\nB. slope geometry\nC. soil properties\nD. angle\nE. plasticity index\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_712","media":["validation_712_0.mp4"],"messages":[{"role":"user","question":"In the video, the patient indicates a deformity known as **_____**.","answer":"genu recurvatum","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_18","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the patient indicates a deformity known as **_____**."}]},{"id":"validation_713","media":["validation_713_0.mp4"],"messages":[{"role":"user","question":"What kind of treatment technology is shown in the video?","answer":"D","hint":"","options":{"A":"Medication","B":"Chemotherapy","C":"Physiotherapy","D":"Image-guided surgery","E":"Radiation therapy"},"choices":[],"video_id":"Biomedical_Engineering_18","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of treatment technology is shown in the video?\nA. Medication\nB. Chemotherapy\nC. Physiotherapy\nD. Image-guided surgery\nE. Radiation therapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_714","media":["validation_714_0.mp4"],"messages":[{"role":"user","question":"Which of the following deformities is most likely being corrected?","answer":"B","hint":"","options":{"A":"Genu valgum (knock-knee)","B":"Genu recurvatum (knee hyperextension)","C":"Genu varum (bow-leg)","D":"Femoral anteversion","E":"External tibial torsion"},"choices":[],"video_id":"Biomedical_Engineering_18","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following deformities is most likely being corrected?\nA. Genu valgum (knock-knee)\nB. Genu recurvatum (knee hyperextension)\nC. Genu varum (bow-leg)\nD. Femoral anteversion\nE. External tibial torsion\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_715","media":["validation_715_0.mp4"],"messages":[{"role":"user","question":"Which of the following dosing regimens is most appropriate for this patient in the video?","answer":"C","hint":"","options":{"A":"500 mg every 8 hours","B":"250 mg every 8 hours","C":"500 mg every 12 hours","D":"250 mg every 12 hours","E":"Amoxicillin is contraindicated in renal impairment for this patient"},"choices":[],"video_id":"Pharmacy_23","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following dosing regimens is most appropriate for this patient in the video?\nA. 500 mg every 8 hours\nB. 250 mg every 8 hours\nC. 500 mg every 12 hours\nD. 250 mg every 12 hours\nE. Amoxicillin is contraindicated in renal impairment for this patient\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_716","media":["validation_716_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which type of organizational culture is most likely being exhibited at the conference?","answer":"C","hint":"","options":{"A":"Market Culture","B":"Hierarchy Culture","C":"Clan Culture","D":"Adhocracy Culture","E":"Divisional Culture"},"choices":[],"video_id":"Management_11","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video description, which type of organizational culture is most likely being exhibited at the conference?\nA. Market Culture\nB. Hierarchy Culture\nC. Clan Culture\nD. Adhocracy Culture\nE. Divisional Culture\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_717","media":["validation_717_0.mp4"],"messages":[{"role":"user","question":"In the video, the device's motion is primarily driven by **____**.","answer":"evaporative cooling","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_9","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>In the video, the device's motion is primarily driven by **____**."}]},{"id":"validation_718","media":["validation_718_0.mp4"],"messages":[{"role":"user","question":"Considering thermodynamic principles, which of the following properties must the red liquid possess to enable this continuous cycling behavior in the apparatus?","answer":"E","hint":"","options":{"A":"High viscosity to resist flow and enhance thermal conductivity.","B":"Low specific heat capacity to rapidly change temperature with small heat input.","C":"High boiling point to remain liquid under heating and prevent vaporization.","D":"Minimal coefficient of thermal expansion to maintain volume despite temperature changes.","E":"Low boiling point and high coefficient of thermal expansion to vaporize and expand readily with small heat input."},"choices":[],"video_id":"Thermodynamics_9","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Considering thermodynamic principles, which of the following properties must the red liquid possess to enable this continuous cycling behavior in the apparatus?\nA. High viscosity to resist flow and enhance thermal conductivity.\nB. Low specific heat capacity to rapidly change temperature with small heat input.\nC. High boiling point to remain liquid under heating and prevent vaporization.\nD. Minimal coefficient of thermal expansion to maintain volume despite temperature changes.\nE. Low boiling point and high coefficient of thermal expansion to vaporize and expand readily with small heat input.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_719","media":["validation_719_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the fundamental thermodynamic principle responsible for the continuous cycling motion observed in both devices?","answer":"C","hint":"","options":{"A":"The devices operate based on the Seebeck effect, converting thermal gradients directly into electrical energy to drive motion.","B":"Atmospheric pressure fluctuations cause periodic compression and expansion of the gas above the liquid, leading to the cycling motion.","C":"Evaporation at one end and heating at the other create a temperature difference, causing vapor pressure changes that drive the liquid movement.","D":"Thermal expansion of the liquid due to uniform heating causes the liquid to rise and fall cyclically in the apparatus.","E":"The devices function as closed-cycle heat engines operating between two thermal reservoirs, converting heat into work via the Stirling cycle."},"choices":[],"video_id":"Thermodynamics_9","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following best explains the fundamental thermodynamic principle responsible for the continuous cycling motion observed in both devices?\nA. The devices operate based on the Seebeck effect, converting thermal gradients directly into electrical energy to drive motion.\nB. Atmospheric pressure fluctuations cause periodic compression and expansion of the gas above the liquid, leading to the cycling motion.\nC. Evaporation at one end and heating at the other create a temperature difference, causing vapor pressure changes that drive the liquid movement.\nD. Thermal expansion of the liquid due to uniform heating causes the liquid to rise and fall cyclically in the apparatus.\nE. The devices function as closed-cycle heat engines operating between two thermal reservoirs, converting heat into work via the Stirling cycle.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_72","media":["validation_72_0.mp4"],"messages":[{"role":"user","question":"Why does the wooden stick rotate with the plastic strip?","answer":"E","hint":"","options":{"A":"Wooden strips and plastic rods with different electrical charges attract each other.","B":"The wooden stick and the plastic rod have the same electric charge and repel each other.","C":"The plastic rod is charged, but the wooden strip is uncharged. The plastic rod ionizes the air to make the wooden strip charged and creates a force interaction with the plastic rod.","D":"The wooden strips are charged, but the plastic rods are not. The molecules of the plastic rod are polarized and the wooden strips are subject to magnetic forces.","E":"The wooden stick is uncharged and the plastic rod is charged. The wood molecules are polarized and rotate due to uneven forces in the electric field."},"choices":[],"video_id":"Electromagnetism_7","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why does the wooden stick rotate with the plastic strip?\nA. Wooden strips and plastic rods with different electrical charges attract each other.\nB. The wooden stick and the plastic rod have the same electric charge and repel each other.\nC. The plastic rod is charged, but the wooden strip is uncharged. The plastic rod ionizes the air to make the wooden strip charged and creates a force interaction with the plastic rod.\nD. The wooden strips are charged, but the plastic rods are not. The molecules of the plastic rod are polarized and the wooden strips are subject to magnetic forces.\nE. The wooden stick is uncharged and the plastic rod is charged. The wood molecules are polarized and rotate due to uneven forces in the electric field.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_720","media":["validation_720_0.mp4"],"messages":[{"role":"user","question":"What are the relative tendencies of the ring and disc on the board in the video? ","answer":"D","hint":"","options":{"A":"Stay still","B":"Ring slides up slower, disc slides up faster","C":"Ring slides up faster, disc slides up slower","D":"Ring falls faster, disc falls slower","E":"Falling at the same speed"},"choices":[],"video_id":"Mechanics_26","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>What are the relative tendencies of the ring and disc on the board in the video? \nA. Stay still\nB. Ring slides up slower, disc slides up faster\nC. Ring slides up faster, disc slides up slower\nD. Ring falls faster, disc falls slower\nE. Falling at the same speed\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_721","media":["validation_721_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements is correct regarding their motion and the distribution of their kinetic energy at the bottom?","answer":"C","hint":"","options":{"A":"The wooden object reaches the bottom before the metal object, and a greater fraction of its total kinetic energy is rotational than that of the metal object.","B":"Both reach the bottom at the same time, but the metal object has less total kinetic energy than the wooden object.","C":"The wooden object reaches the bottom before the metal object, and a greater fraction of its total kinetic energy is translational than that of the metal object.","D":"The metal object reaches the bottom before the wooden object, and both have the same distribution between rotational and translational kinetic energy.","E":"Both reach the bottom at the same time, and the wooden object has more rotational kinetic energy than the metal object."},"choices":[],"video_id":"Mechanics_26","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following statements is correct regarding their motion and the distribution of their kinetic energy at the bottom?\nA. The wooden object reaches the bottom before the metal object, and a greater fraction of its total kinetic energy is rotational than that of the metal object.\nB. Both reach the bottom at the same time, but the metal object has less total kinetic energy than the wooden object.\nC. The wooden object reaches the bottom before the metal object, and a greater fraction of its total kinetic energy is translational than that of the metal object.\nD. The metal object reaches the bottom before the wooden object, and both have the same distribution between rotational and translational kinetic energy.\nE. Both reach the bottom at the same time, and the wooden object has more rotational kinetic energy than the metal object.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_722","media":["validation_722_0.mp4"],"messages":[{"role":"user","question":"There are four aspects of a disease process that form the core of pathology. Which of these does the video show? ","answer":"C","hint":"","options":{"A":"Pathogenesis","B":"Diagnosis","C":"Etiology","D":"Prognosis","E":"Morphologic changes"},"choices":[],"video_id":"Basic_Medicine_21","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>There are four aspects of a disease process that form the core of pathology. Which of these does the video show? \nA. Pathogenesis\nB. Diagnosis\nC. Etiology\nD. Prognosis\nE. Morphologic changes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_723","media":["validation_723_0.mp4"],"messages":[{"role":"user","question":"The average number of bits per character in the encoded word is **__**.","answer":"2.4","hint":"","options":{},"choices":[],"video_id":"Computer_Science_39","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The average number of bits per character in the encoded word is **__**."}]},{"id":"validation_724","media":["validation_724_0.mp4"],"messages":[{"role":"user","question":"What kind of idea of algorithm is used in solving the problem in the video?","answer":"C","hint":"","options":{"A":"branch and bound","B":"backtracking","C":"greedy algorithm","D":"Dynamic programming","E":"divide and conquer"},"choices":[],"video_id":"Computer_Science_39","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of idea of algorithm is used in solving the problem in the video?\nA. branch and bound\nB. backtracking\nC. greedy algorithm\nD. Dynamic programming\nE. divide and conquer\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_725","media":["validation_725_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes a property of this coding process?","answer":"B","hint":"","options":{"A":"This code assigns equal-length codes to all symbols to ensure uniformity.","B":"This code is a prefix code that is optimal for the given symbol frequencies.","C":"This code may produce codes that are not uniquely decodable without additional information.","D":"This code requires that symbol frequencies are integers and powers of two.","E":"This code assigns longer codewords to symbols with higher frequency to balance the tree."},"choices":[],"video_id":"Computer_Science_39","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements correctly describes a property of this coding process?\nA. This code assigns equal-length codes to all symbols to ensure uniformity.\nB. This code is a prefix code that is optimal for the given symbol frequencies.\nC. This code may produce codes that are not uniquely decodable without additional information.\nD. This code requires that symbol frequencies are integers and powers of two.\nE. This code assigns longer codewords to symbols with higher frequency to balance the tree.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_726","media":["validation_726_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly describes a potential issue when multiple symbols have the same frequency in the shown coding algorithm?","answer":"A","hint":"","options":{"A":"When multiple symbols have the same frequency, the structure of the coding tree and the resulting codes can vary, leading to different possible optimal codes.","B":"When multiple symbols have the same frequency, the coding assigns identical codewords to those symbols, causing ambiguity.","C":"When multiple symbols have the same frequency, the coding becomes inefficient and does not minimize the average code length.","D":"When multiple symbols have the same frequency, the coding must utilize fixed-length codes for those symbols.","E":"When multiple symbols have the same frequency, the coding requires additional prefix bits to distinguish among them."},"choices":[],"video_id":"Computer_Science_39","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Which of the following statements correctly describes a potential issue when multiple symbols have the same frequency in the shown coding algorithm?\nA. When multiple symbols have the same frequency, the structure of the coding tree and the resulting codes can vary, leading to different possible optimal codes.\nB. When multiple symbols have the same frequency, the coding assigns identical codewords to those symbols, causing ambiguity.\nC. When multiple symbols have the same frequency, the coding becomes inefficient and does not minimize the average code length.\nD. When multiple symbols have the same frequency, the coding must utilize fixed-length codes for those symbols.\nE. When multiple symbols have the same frequency, the coding requires additional prefix bits to distinguish among them.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_727","media":["validation_727_0.mp4"],"messages":[{"role":"user","question":"Assuming we encode the unique letters using a fixed-length binary code instead, which of the following correctly states the number of bits required to encode 'PETER'?  What is the number of bits required to encode 'PETER' using the coding algorithm in the video?","answer":"C","hint":"","options":{"A":"Fixed-length binary code needs 5 bits; The coding algorithm in the video needs 5 bits","B":"Fixed-length binary code needs 10 bits; The coding algorithm in the video needs 6 bits","C":"Fixed-length binary code needs 15 bits; The coding algorithm in the video needs 12 bits","D":"Fixed-length binary code needs 20 bits; The coding algorithm in the video needs 15 bits","E":"Fixed-length binary code needs 20 bits; The coding algorithm in the video needs 16 bits"},"choices":[],"video_id":"Computer_Science_39","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Assuming we encode the unique letters using a fixed-length binary code instead, which of the following correctly states the number of bits required to encode 'PETER'?  What is the number of bits required to encode 'PETER' using the coding algorithm in the video?\nA. Fixed-length binary code needs 5 bits; The coding algorithm in the video needs 5 bits\nB. Fixed-length binary code needs 10 bits; The coding algorithm in the video needs 6 bits\nC. Fixed-length binary code needs 15 bits; The coding algorithm in the video needs 12 bits\nD. Fixed-length binary code needs 20 bits; The coding algorithm in the video needs 15 bits\nE. Fixed-length binary code needs 20 bits; The coding algorithm in the video needs 16 bits\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_728","media":["validation_728_0.mp4"],"messages":[{"role":"user","question":"In the video, the team is using a direct method known as **_____** pumping.","answer":"sump","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_24","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the video, the team is using a direct method known as **_____** pumping."}]},{"id":"validation_729","media":["validation_729_0.mp4"],"messages":[{"role":"user","question":"What is the primary method used for dewatering in the video?","answer":"E","hint":"","options":{"A":"involves applying physical barriers and membranes","B":"uses heat to evaporate excess moisture from the soil","C":"employs pressure grouting techniques to displace water from soil","D":"relies on chemical treatments to solidify the soil and reduce moisture content","E":"involves lowering the groundwater level using pumps or drainage systems"},"choices":[],"video_id":"Civil_Engineering_24","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>What is the primary method used for dewatering in the video?\nA. involves applying physical barriers and membranes\nB. uses heat to evaporate excess moisture from the soil\nC. employs pressure grouting techniques to displace water from soil\nD. relies on chemical treatments to solidify the soil and reduce moisture content\nE. involves lowering the groundwater level using pumps or drainage systems\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_73","media":["validation_73_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the phenomenon in the video?","answer":"D","hint":"","options":{"A":"The metal rod transfers electrons directly to the metal cap through conduction when brought near, charging the cap and causing the metal piece inside to move due to electrostatic attraction.","B":"Bringing the charged metal rod near the metal cap induces a redistribution of charges in the cap by electrostatic induction, causing the metal piece inside to deflect due to induced charges.","C":"Rubbing the fabric on the metal cap discharges any existing charge on the cap by grounding it, so the metal piece inside no longer responds to the external rod.","D":"Rubbing the fabric on the metal cap transfers additional electric charge to the cap so that when the charged rod is brought near, the interaction with the metal piece inside changes due to modified electric fields.","E":"The charged metal rod ionizes the air around the jar, and the resulting ions enter the jar and interact with the metal piece inside, causing it to move."},"choices":[],"video_id":"Electromagnetism_7","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which of the following best explains the phenomenon in the video?\nA. The metal rod transfers electrons directly to the metal cap through conduction when brought near, charging the cap and causing the metal piece inside to move due to electrostatic attraction.\nB. Bringing the charged metal rod near the metal cap induces a redistribution of charges in the cap by electrostatic induction, causing the metal piece inside to deflect due to induced charges.\nC. Rubbing the fabric on the metal cap discharges any existing charge on the cap by grounding it, so the metal piece inside no longer responds to the external rod.\nD. Rubbing the fabric on the metal cap transfers additional electric charge to the cap so that when the charged rod is brought near, the interaction with the metal piece inside changes due to modified electric fields.\nE. The charged metal rod ionizes the air around the jar, and the resulting ions enter the jar and interact with the metal piece inside, causing it to move.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_730","media":["validation_730_0.mp4"],"messages":[{"role":"user","question":"Based on the scenario shown in the video, which of the following potential risks should be the most immediate concern for civil engineers overseeing the operation?","answer":"A","hint":"","options":{"A":"Soil instability and potential for differential settlement due to rapid dewatering altering pore water pressures in surrounding foundation soils.","B":"Contamination of groundwater from pollutants dispersed during pumping operations.","C":"Increased external hydrostatic pressure on basement walls leading to structural failure as internal water is removed.","D":"Interference with underground utilities such as gas lines and electrical conduits during the placement of pumps and hoses.","E":"Legal liability arising from discharging pumped water into public waterways without proper permits."},"choices":[],"video_id":"Civil_Engineering_24","question_type":"multiple-choice","subject":"Civil Engineering","prompt":"<video>Based on the scenario shown in the video, which of the following potential risks should be the most immediate concern for civil engineers overseeing the operation?\nA. Soil instability and potential for differential settlement due to rapid dewatering altering pore water pressures in surrounding foundation soils.\nB. Contamination of groundwater from pollutants dispersed during pumping operations.\nC. Increased external hydrostatic pressure on basement walls leading to structural failure as internal water is removed.\nD. Interference with underground utilities such as gas lines and electrical conduits during the placement of pumps and hoses.\nE. Legal liability arising from discharging pumped water into public waterways without proper permits.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_731","media":["validation_731_0.mp4"],"messages":[{"role":"user","question":"In the video, the man's condition is known as **______________**.","answer":"anosmia","hint":"","options":{},"choices":[],"video_id":"Neurobiology_24","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, the man's condition is known as **______________**."}]},{"id":"validation_732","media":["validation_732_0.mp4"],"messages":[{"role":"user","question":"The device is an example of a _____ engine(Be specific).","answer":"Stirling","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_10","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>The device is an example of a _____ engine(Be specific)."}]},{"id":"validation_733","media":["validation_733_0.mp4"],"messages":[{"role":"user","question":"What is the mechanism of action of using drugs to relieve this symptom?","answer":"A","hint":"","options":{"A":"Modulating Ion Channels","B":"Inhibiting Acid Production","C":"Increasing Dopamine Levels","D":"Blocking Calcium Channels","E":"Stimulating Beta-Adrenergic Receptors"},"choices":[],"video_id":"Pharmacy_24","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>What is the mechanism of action of using drugs to relieve this symptom?\nA. Modulating Ion Channels\nB. Inhibiting Acid Production\nC. Increasing Dopamine Levels\nD. Blocking Calcium Channels\nE. Stimulating Beta-Adrenergic Receptors\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_734","media":["validation_734_0.mp4"],"messages":[{"role":"user","question":"Based on the phenomena observed in the video, which of the following options does describe a physical property of the solid substance?","answer":"D","hint":"","options":{"A":"Reacts vigorously with air","B":"soluble in oil","C":"black color","D":"Soft Alkali metal","E":"Insoluble in water"},"choices":[],"video_id":"Chemistry_9","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Based on the phenomena observed in the video, which of the following options does describe a physical property of the solid substance?\nA. Reacts vigorously with air\nB. soluble in oil\nC. black color\nD. Soft Alkali metal\nE. Insoluble in water\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_735","media":["validation_735_0.mp4"],"messages":[{"role":"user","question":"Based on the observations described in the video, what was the primary purpose of using the small electrical device during the experiment?","answer":"D","hint":"","options":{"A":"To determine the hardness of the solid substance.","B":"To test if the solid substance reacts chemically when electrified.","C":"To demonstrate the magnetic properties of the solid substance.","D":"To test the electrical conductivity of the solid substance.","E":"To observe if the solid substance emits light when electrically stimulated."},"choices":[],"video_id":"Chemistry_9","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Based on the observations described in the video, what was the primary purpose of using the small electrical device during the experiment?\nA. To determine the hardness of the solid substance.\nB. To test if the solid substance reacts chemically when electrified.\nC. To demonstrate the magnetic properties of the solid substance.\nD. To test the electrical conductivity of the solid substance.\nE. To observe if the solid substance emits light when electrically stimulated.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_736","media":["validation_736_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the reactions in the video?","answer":"B","hint":"","options":{"A":"The solid is magnesium; it reacts with water producing hydrogen gas and magnesium dihydroxide, and the liquid in the beaker is an acid-base indicator turning color indicating a basic solution.","B":"The solid is sodium; it reacts with water producing hydrogen gas and sodium hydroxide, and the liquid in the beaker is acid-base indicator indicating a basic solution.","C":"The solid is zinc; it reacts slowly with water producing hydrogen gas, and the liquid in the beaker is an indicator showing the formation of a neutral solution.","D":"The solid is phosphorus; it reacts with water producing phosphine gas, and the liquid in the beaker indicates the presence of a phosphorous acid.","E":"The solid is iron; it does not react significantly with water, and the liquid in the beaker is an indicator detecting iron ions in solution."},"choices":[],"video_id":"Chemistry_9","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>Which of the following best explains the reactions in the video?\nA. The solid is magnesium; it reacts with water producing hydrogen gas and magnesium dihydroxide, and the liquid in the beaker is an acid-base indicator turning color indicating a basic solution.\nB. The solid is sodium; it reacts with water producing hydrogen gas and sodium hydroxide, and the liquid in the beaker is acid-base indicator indicating a basic solution.\nC. The solid is zinc; it reacts slowly with water producing hydrogen gas, and the liquid in the beaker is an indicator showing the formation of a neutral solution.\nD. The solid is phosphorus; it reacts with water producing phosphine gas, and the liquid in the beaker indicates the presence of a phosphorous acid.\nE. The solid is iron; it does not react significantly with water, and the liquid in the beaker is an indicator detecting iron ions in solution.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_737","media":["validation_737_0.mp4"],"messages":[{"role":"user","question":"Considering the factors influencing the industrial processes demonstrated in the video, the metal mold is made to improve the control of ______ during the process.","answer":"temperature distribution","hint":"","options":{},"choices":[],"video_id":"Materials_Science_10","question_type":"open-ended","subject":"Materials Science","prompt":"<video>Considering the factors influencing the industrial processes demonstrated in the video, the metal mold is made to improve the control of ______ during the process."}]},{"id":"validation_738","media":["validation_738_0.mp4"],"messages":[{"role":"user","question":"Which is incorrect about the shown process?","answer":"D","hint":"","options":{"A":"The temperature at point T3 is always the highest","B":"The ambient temperature greatly influences the shown process","C":"Temperature of the prepreg during the process not exceeding 100 degrees Celsius","D":"No gas emissions occur during the process","E":"The mold is made of ceramic material to enhance oxidation resistance"},"choices":[],"video_id":"Materials_Science_10","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Which is incorrect about the shown process?\nA. The temperature at point T3 is always the highest\nB. The ambient temperature greatly influences the shown process\nC. Temperature of the prepreg during the process not exceeding 100 degrees Celsius\nD. No gas emissions occur during the process\nE. The mold is made of ceramic material to enhance oxidation resistance\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_739","media":["validation_739_0.mp4"],"messages":[{"role":"user","question":"Why did the two balls fall slower in the second experiment than in the first?","answer":"C","hint":"","options":{"A":"The first two balls are magnet balls. There are magnets under the tube, and the balls are driven downward.","B":"The second time the two small balls are magnet balls, there are magnets under the tube, and the small balls are subject to upward resistance.","C":"The second time, the two small balls are magnet balls. During the falling process, the aluminum tube generates eddy currents, and the small balls experience upward resistance.","D":"The first two small balls are magnet balls. During the falling process, the aluminum tube generates eddy currents, and the small balls receive downward momentum.","E":"In the second experiment, the magnetic tube was replaced, and the ball was subjected to an upward magnetic force."},"choices":[],"video_id":"Electrical_Engineering_26","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Why did the two balls fall slower in the second experiment than in the first?\nA. The first two balls are magnet balls. There are magnets under the tube, and the balls are driven downward.\nB. The second time the two small balls are magnet balls, there are magnets under the tube, and the small balls are subject to upward resistance.\nC. The second time, the two small balls are magnet balls. During the falling process, the aluminum tube generates eddy currents, and the small balls experience upward resistance.\nD. The first two small balls are magnet balls. During the falling process, the aluminum tube generates eddy currents, and the small balls receive downward momentum.\nE. In the second experiment, the magnetic tube was replaced, and the ball was subjected to an upward magnetic force.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_74","media":["validation_74_0.mp4"],"messages":[{"role":"user","question":"The video demonstrates the complete workflow of a process. The first step of the process is called _______.","answer":"convergence","hint":"","options":{},"choices":[],"video_id":"Neurobiology_3","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The video demonstrates the complete workflow of a process. The first step of the process is called _______."}]},{"id":"validation_740","media":["validation_740_0.mp4"],"messages":[{"role":"user","question":"In the first word shown in the video, **'-ment'** is an example of a __________ morpheme.","answer":"derivational","hint":"","options":{},"choices":[],"video_id":"Literature_8","question_type":"open-ended","subject":"Literature","prompt":"<video>In the first word shown in the video, **'-ment'** is an example of a __________ morpheme."}]},{"id":"validation_741","media":["validation_741_0.mp4"],"messages":[{"role":"user","question":"In the four words in the video, how many bound morphemes are there?","answer":"C","hint":"","options":{"A":"4","B":"1","C":"2","D":"0","E":"3"},"choices":[],"video_id":"Literature_8","question_type":"multiple-choice","subject":"Literature","prompt":"<video>In the four words in the video, how many bound morphemes are there?\nA. 4\nB. 1\nC. 2\nD. 0\nE. 3\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_742","media":["validation_742_0.mp4"],"messages":[{"role":"user","question":"The shown approach is an example of a(n) ______ algorithm.","answer":"greedy","hint":"","options":{},"choices":[],"video_id":"Computer_Science_40","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The shown approach is an example of a(n) ______ algorithm."}]},{"id":"validation_743","media":["validation_743_0.mp4"],"messages":[{"role":"user","question":"Which movement of time dilation at the end of the video is similar to the time dilation of B at the start of video?","answer":"C","hint":"","options":{"A":"Upper","B":"Neither Upper or Lower","C":"Lower","D":"Both Upper and Lower","E":"Delayed"},"choices":[],"video_id":"Modern_Physics_13","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Which movement of time dilation at the end of the video is similar to the time dilation of B at the start of video?\nA. Upper\nB. Neither Upper or Lower\nC. Lower\nD. Both Upper and Lower\nE. Delayed\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_744","media":["validation_744_0.mp4"],"messages":[{"role":"user","question":"From Earth, one of the figures, A or B, remains stationary, while the other moves at 0.8 times the speed of light (0.8c). If B's stopwatch shows that 1 hour has passed, how much time has elapsed on A's stopwatch due to the time dilation effect in special relativity?","answer":"E","hint":"","options":{"A":"0.6 hours","B":"0.8 hours","C":"1.0 hour","D":"1.25 hours","E":"1.67 hours"},"choices":[],"video_id":"Modern_Physics_13","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>From Earth, one of the figures, A or B, remains stationary, while the other moves at 0.8 times the speed of light (0.8c). If B's stopwatch shows that 1 hour has passed, how much time has elapsed on A's stopwatch due to the time dilation effect in special relativity?\nA. 0.6 hours\nB. 0.8 hours\nC. 1.0 hour\nD. 1.25 hours\nE. 1.67 hours\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_745","media":["validation_745_0.mp4"],"messages":[{"role":"user","question":"The “Y”-shaped cell shown at the beginning of the video is most likely an ______.","answer":"immunoglobulin E (IgE)","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_24","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The “Y”-shaped cell shown at the beginning of the video is most likely an ______."}]},{"id":"validation_746","media":["validation_746_0.mp4"],"messages":[{"role":"user","question":"What is the most likely cause of this reaction in the body?","answer":"B","hint":"","options":{"A":"autoimmune response","B":"food allergy","C":"food intolerance","D":"histamine deficiency","E":"none of the above"},"choices":[],"video_id":"Clinical_Medicine_24","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What is the most likely cause of this reaction in the body?\nA. autoimmune response\nB. food allergy\nC. food intolerance\nD. histamine deficiency\nE. none of the above\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_747","media":["validation_747_0.mp4"],"messages":[{"role":"user","question":"Based on the immune response and symptoms demonstrated in the video, and considering the underlying immune mechanisms, which interleukin plays a dominant role in this process and finally contributes to the symptoms?","answer":"B","hint":"","options":{"A":"Interleukin-2 (IL-2)","B":"Interleukin-4 (IL-4)","C":"Interleukin-5 (IL-5)","D":"Interleukin-10 (IL-10)","E":"Interleukin-12 (IL-12)"},"choices":[],"video_id":"Clinical_Medicine_24","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the immune response and symptoms demonstrated in the video, and considering the underlying immune mechanisms, which interleukin plays a dominant role in this process and finally contributes to the symptoms?\nA. Interleukin-2 (IL-2)\nB. Interleukin-4 (IL-4)\nC. Interleukin-5 (IL-5)\nD. Interleukin-10 (IL-10)\nE. Interleukin-12 (IL-12)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_748","media":["validation_748_0.mp4"],"messages":[{"role":"user","question":"Which role the right thing at the start of the video plays in the experiment later?","answer":"B","hint":"","options":{"A":"Reference object","B":"Real image","C":"Apparent image","D":"Control variable","E":"Virtual image"},"choices":[],"video_id":"Modern_Physics_14","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Which role the right thing at the start of the video plays in the experiment later?\nA. Reference object\nB. Real image\nC. Apparent image\nD. Control variable\nE. Virtual image\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_749","media":["validation_749_0.mp4"],"messages":[{"role":"user","question":"Which of the following most likely represents how brain process information in the video?","answer":"A","hint":"","options":{"A":"Reflective system","B":"Emotional Reactions","C":"Cognitive biases","D":"Decision Pressure","E":"Reactive system"},"choices":[],"video_id":"Management_12","question_type":"multiple-choice","subject":"Management","prompt":"<video>Which of the following most likely represents how brain process information in the video?\nA. Reflective system\nB. Emotional Reactions\nC. Cognitive biases\nD. Decision Pressure\nE. Reactive system\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_75","media":["validation_75_0.mp4"],"messages":[{"role":"user","question":"For the company shown in the video, what is one of the methods to handle associated risks?","answer":"B","hint":"","options":{"A":"diversification","B":"vertical integration","C":"horizontal integration","D":"outsourcing","E":"speculation"},"choices":[],"video_id":"Management_2","question_type":"multiple-choice","subject":"Management","prompt":"<video>For the company shown in the video, what is one of the methods to handle associated risks?\nA. diversification\nB. vertical integration\nC. horizontal integration\nD. outsourcing\nE. speculation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_750","media":["validation_750_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which type of social power is the woman pointing at the document most likely exercising over the seated woman?","answer":"B","hint":"","options":{"A":"Reward Power","B":"Expert Power","C":"Legitimate Power","D":"Referent Power","E":"Informational Power"},"choices":[],"video_id":"Management_12","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video, which type of social power is the woman pointing at the document most likely exercising over the seated woman?\nA. Reward Power\nB. Expert Power\nC. Legitimate Power\nD. Referent Power\nE. Informational Power\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_751","media":["validation_751_0.mp4"],"messages":[{"role":"user","question":"Based on the video description, which influence tactic is the woman pointing at the document most likely using to influence the seated woman?","answer":"A","hint":"","options":{"A":"Rational Persuasion","B":"Inspirational Appeal","C":"Ingratiation","D":"Personal Appeal","E":"Exchange"},"choices":[],"video_id":"Management_12","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video description, which influence tactic is the woman pointing at the document most likely using to influence the seated woman?\nA. Rational Persuasion\nB. Inspirational Appeal\nC. Ingratiation\nD. Personal Appeal\nE. Exchange\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_752","media":["validation_752_0.mp4"],"messages":[{"role":"user","question":"Which scientist discovered the phenomenon in the video?","answer":"B","hint":"","options":{"A":"Tesla","B":"Newton","C":"Einstein","D":"Faraday","E":"Schrodinger"},"choices":[],"video_id":"Mechanics_27","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which scientist discovered the phenomenon in the video?\nA. Tesla\nB. Newton\nC. Einstein\nD. Faraday\nE. Schrodinger\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_753","media":["validation_753_0.mp4"],"messages":[{"role":"user","question":"In the video, the process responsible for forming the rock shown in the video is called **__________ weathering**.","answer":"differential weathering","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_25","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>In the video, the process responsible for forming the rock shown in the video is called **__________ weathering**."}]},{"id":"validation_754","media":["validation_754_0.mp4"],"messages":[{"role":"user","question":"Assume the small blue particles in the video are oligopeptide, the structure formed by particle motion in the video is called __________.","answer":"hydrogel","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_19","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>Assume the small blue particles in the video are oligopeptide, the structure formed by particle motion in the video is called __________."}]},{"id":"validation_755","media":["validation_755_0.mp4"],"messages":[{"role":"user","question":"What process of molecules is shown in the video?","answer":"E","hint":"","options":{"A":"Dissolve","B":"Hydrolyze","C":"Fission","D":"Degrade","E":"self-assembly"},"choices":[],"video_id":"Biomedical_Engineering_19","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What process of molecules is shown in the video?\nA. Dissolve\nB. Hydrolyze\nC. Fission\nD. Degrade\nE. self-assembly\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_756","media":["validation_756_0.mp4"],"messages":[{"role":"user","question":"Which of the following phenomena is most likely being demonstrated?","answer":"C","hint":"","options":{"A":"Electrostatic repulsion between charged particles","B":"Thermal diffusion leading to particle dispersion","C":"Molecular self-assembly driven by non-covalent interactions","D":"Mechanical fragmentation due to shear forces","E":"Chemical decomposition through hydrolysis"},"choices":[],"video_id":"Biomedical_Engineering_19","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following phenomena is most likely being demonstrated?\nA. Electrostatic repulsion between charged particles\nB. Thermal diffusion leading to particle dispersion\nC. Molecular self-assembly driven by non-covalent interactions\nD. Mechanical fragmentation due to shear forces\nE. Chemical decomposition through hydrolysis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_757","media":["validation_757_0.mp4"],"messages":[{"role":"user","question":"In the video, the bioreactor is used to produce **________**.","answer":"Macrophages","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_20","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the bioreactor is used to produce **________**."}]},{"id":"validation_758","media":["validation_758_0.mp4"],"messages":[{"role":"user","question":"What treatment is used in the video?","answer":"D","hint":"","options":{"A":"Physiotherapy","B":"Chemotherapy","C":"Radiotherapy","D":"Immunotherapy","E":"Surgery"},"choices":[],"video_id":"Biomedical_Engineering_20","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What treatment is used in the video?\nA. Physiotherapy\nB. Chemotherapy\nC. Radiotherapy\nD. Immunotherapy\nE. Surgery\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_759","media":["validation_759_0.mp4"],"messages":[{"role":"user","question":"Which of the following best describes the shown biomedical engineering approach?","answer":"C","hint":"","options":{"A":"Development of synthetic antibiotics that bypass bacterial resistance mechanisms.","B":"Application of nanotechnology to deliver drugs directly to bacterial cells.","C":"Ex vivo expansion of macrophages to boost the patient's innate immune response.","D":"Utilization of CRISPR-Cas9 gene editing to modify bacterial genomes in vivo.","E":"Administration of bacteriophages engineered to target specific bacteria."},"choices":[],"video_id":"Biomedical_Engineering_20","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following best describes the shown biomedical engineering approach?\nA. Development of synthetic antibiotics that bypass bacterial resistance mechanisms.\nB. Application of nanotechnology to deliver drugs directly to bacterial cells.\nC. Ex vivo expansion of macrophages to boost the patient's innate immune response.\nD. Utilization of CRISPR-Cas9 gene editing to modify bacterial genomes in vivo.\nE. Administration of bacteriophages engineered to target specific bacteria.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_76","media":["validation_76_0.mp4"],"messages":[{"role":"user","question":"What kind of functions of the human eyes is shown in this video?","answer":"E","hint":"","options":{"A":"Convergence","B":"Dilation","C":"Refraction","D":"Transduction","E":"Accommodation"},"choices":[],"video_id":"Neurobiology_3","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>What kind of functions of the human eyes is shown in this video?\nA. Convergence\nB. Dilation\nC. Refraction\nD. Transduction\nE. Accommodation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_760","media":["validation_760_0.mp4"],"messages":[{"role":"user","question":"Which biomedical engineering strategy is being employed, and what is the primary advantage of this approach?","answer":"E","hint":"","options":{"A":"Development of bacteriophage therapy to specifically lyse bacterial cells, offering targeted action without affecting human cells.","B":"Utilization of monoclonal antibodies to neutralize bacterial toxins, providing passive immunity.","C":"Application of gene editing techniques to modify patient T-cells to recognize bacterial antigens.","D":"Engineering of antimicrobial nanoparticles that disrupt bacterial cell walls, reducing antibiotic resistance.","E":"Ex vivo expansion and reinfusion of macrophages to enhance innate immunity, directly phagocytosing bacteria."},"choices":[],"video_id":"Biomedical_Engineering_20","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which biomedical engineering strategy is being employed, and what is the primary advantage of this approach?\nA. Development of bacteriophage therapy to specifically lyse bacterial cells, offering targeted action without affecting human cells.\nB. Utilization of monoclonal antibodies to neutralize bacterial toxins, providing passive immunity.\nC. Application of gene editing techniques to modify patient T-cells to recognize bacterial antigens.\nD. Engineering of antimicrobial nanoparticles that disrupt bacterial cell walls, reducing antibiotic resistance.\nE. Ex vivo expansion and reinfusion of macrophages to enhance innate immunity, directly phagocytosing bacteria.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_761","media":["validation_761_0.mp4"],"messages":[{"role":"user","question":"In the scene described, the woman's action creates a legal obligation known as a **____**.","answer":"debt","hint":"","options":{},"choices":[],"video_id":"Law_9","question_type":"open-ended","subject":"Law","prompt":"<video>In the scene described, the woman's action creates a legal obligation known as a **____**."}]},{"id":"validation_762","media":["validation_762_0.mp4"],"messages":[{"role":"user","question":"In what directions can the AGV in the video travel?","answer":"C","hint":"","options":{"A":"cannot be seen from the video","B":"bidirectional","C":"omnidirectional","D":"unidirectional","E":"circular"},"choices":[],"video_id":"Mechanical_Engineering_24","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>In what directions can the AGV in the video travel?\nA. cannot be seen from the video\nB. bidirectional\nC. omnidirectional\nD. unidirectional\nE. circular\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_763","media":["validation_763_0.mp4"],"messages":[{"role":"user","question":"In the video clip, the process where the red square moves along a path and connects with different blue squares is called ______.","answer":"handoff","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_18","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>In the video clip, the process where the red square moves along a path and connects with different blue squares is called ______."}]},{"id":"validation_764","media":["validation_764_0.mp4"],"messages":[{"role":"user","question":"What kind of size of screen is best fit for the movie showed in the image","answer":"C","hint":"","options":{"A":"21:9","B":"3:1","C":"4:3","D":"30:9","E":"2:1"},"choices":[],"video_id":"Art_12","question_type":"multiple-choice","subject":"Art","prompt":"<video>What kind of size of screen is best fit for the movie showed in the image\nA. 21:9\nB. 3:1\nC. 4:3\nD. 30:9\nE. 2:1\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_765","media":["validation_765_0.mp4"],"messages":[{"role":"user","question":"Which filmmaker's style is most evidently reflected in the visual presentation of this scene?","answer":"B","hint":"","options":{"A":"Alfred Hitchcock","B":"Wes Anderson","C":"Federico Fellini","D":"Orson Welles","E":"Jean-Luc Godard"},"choices":[],"video_id":"Art_12","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which filmmaker's style is most evidently reflected in the visual presentation of this scene?\nA. Alfred Hitchcock\nB. Wes Anderson\nC. Federico Fellini\nD. Orson Welles\nE. Jean-Luc Godard\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_766","media":["validation_766_0.mp4"],"messages":[{"role":"user","question":"Which aspect ratio would be most appropriate for displaying the scene described?","answer":"A","hint":"","options":{"A":"1.37:1 (Standard 4:3)","B":"2.35:1 (CinemaScope Widescreen)","C":"1.85:1 (Modern Widescreen)","D":"16:9 (HDTV Standard)","E":"2:1 (Univisium)"},"choices":[],"video_id":"Art_12","question_type":"multiple-choice","subject":"Art","prompt":"<video>Which aspect ratio would be most appropriate for displaying the scene described?\nA. 1.37:1 (Standard 4:3)\nB. 2.35:1 (CinemaScope Widescreen)\nC. 1.85:1 (Modern Widescreen)\nD. 16:9 (HDTV Standard)\nE. 2:1 (Univisium)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_767","media":["validation_767_0.mp4"],"messages":[{"role":"user","question":"The medical professional is demonstrating a surgical procedure using the **______** technique.","answer":"Seldinger","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_25","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The medical professional is demonstrating a surgical procedure using the **______** technique."}]},{"id":"validation_768","media":["validation_768_0.mp4"],"messages":[{"role":"user","question":"In the experiment described, the lines forming a butterfly-like pattern are due to the alignment of particles in a **_______**.","answer":"ferrofluid","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_27","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the experiment described, the lines forming a butterfly-like pattern are due to the alignment of particles in a **_______**."}]},{"id":"validation_769","media":["validation_769_0.mp4"],"messages":[{"role":"user","question":"In the configuration shown in the video, this arrangement forms a basic electrical component known as a ______.","answer":"capacitor","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_27","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the configuration shown in the video, this arrangement forms a basic electrical component known as a ______."}]},{"id":"validation_77","media":["validation_77_0.mp4"],"messages":[{"role":"user","question":"The video demonstrates different stages of eye accommodation. Which combination of physiological responses correctly describes these adjustments?","answer":"B","hint":"","options":{"A":"Pupillary dilation, lens flattening, and divergence of the eyes","B":"Pupillary constriction, lens thickening, and convergence of the eyes","C":"Pupillary dilation, lens thickening, and convergence of the eyes","D":"Pupillary constriction, lens flattening, and divergence of the eyes","E":"Pupillary constriction, lens thickening, and divergence of the eyes"},"choices":[],"video_id":"Neurobiology_3","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>The video demonstrates different stages of eye accommodation. Which combination of physiological responses correctly describes these adjustments?\nA. Pupillary dilation, lens flattening, and divergence of the eyes\nB. Pupillary constriction, lens thickening, and convergence of the eyes\nC. Pupillary dilation, lens thickening, and convergence of the eyes\nD. Pupillary constriction, lens flattening, and divergence of the eyes\nE. Pupillary constriction, lens thickening, and divergence of the eyes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_770","media":["validation_770_0.mp4"],"messages":[{"role":"user","question":"the small blue dots most likely represent _____ ions.","answer":"sodium","hint":"","options":{},"choices":[],"video_id":"Neurobiology_25","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>the small blue dots most likely represent _____ ions."}]},{"id":"validation_771","media":["validation_771_0.mp4"],"messages":[{"role":"user","question":"Considering this video shows an action potential of a neuron, If tetraethylammonium is applied to the neuron in this video, what will happen to the blue ion?","answer":"C","hint":"","options":{"A":"Flow slower","B":"Accumulate outside the neuron","C":"Flow normally","D":"Stop flow","E":"Flow faster"},"choices":[],"video_id":"Neurobiology_25","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Considering this video shows an action potential of a neuron, If tetraethylammonium is applied to the neuron in this video, what will happen to the blue ion?\nA. Flow slower\nB. Accumulate outside the neuron\nC. Flow normally\nD. Stop flow\nE. Flow faster\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_772","media":["validation_772_0.mp4"],"messages":[{"role":"user","question":"Based on the video depicting ion movement across a neuronal membrane during an action potential, if ouabain is applied to the neuron in this video, which of the following is most likely to occur to the dots after prolonged exposure?","answer":"A","hint":"","options":{"A":"Blue dots would accumulate inside the neuron, leading to depolarization.","B":"Blue dots would be actively transported out of the neuron faster, causing hyperpolarization.","C":"Yellow dots would accumulate inside the neuron, leading to depolarization.","D":"Yellow dots would be actively transported out of the neuron faster, causing hyperpolarization.","E":"Yellow dots would begin to flow out of the neuron passively, reversing their normal direction."},"choices":[],"video_id":"Neurobiology_25","question_type":"multiple-choice","subject":"Neurobiology","prompt":"<video>Based on the video depicting ion movement across a neuronal membrane during an action potential, if ouabain is applied to the neuron in this video, which of the following is most likely to occur to the dots after prolonged exposure?\nA. Blue dots would accumulate inside the neuron, leading to depolarization.\nB. Blue dots would be actively transported out of the neuron faster, causing hyperpolarization.\nC. Yellow dots would accumulate inside the neuron, leading to depolarization.\nD. Yellow dots would be actively transported out of the neuron faster, causing hyperpolarization.\nE. Yellow dots would begin to flow out of the neuron passively, reversing their normal direction.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_773","media":["validation_773_0.mp4"],"messages":[{"role":"user","question":"Based on the pathological changes described in the video, the black virus is ___________.","answer":"HIV","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_26","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the pathological changes described in the video, the black virus is ___________."}]},{"id":"validation_774","media":["validation_774_0.mp4"],"messages":[{"role":"user","question":"The motor type shown in the video is most likely a(n) **_______** motor.","answer":"stepper","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_25","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The motor type shown in the video is most likely a(n) **_______** motor."}]},{"id":"validation_775","media":["validation_775_0.mp4"],"messages":[{"role":"user","question":"Given that n is the number of elements and k is the range of input values. The worst-case time complexity of the demonstrated algorithm is O(____).","answer":"n + k","hint":"","options":{},"choices":[],"video_id":"Computer_Science_41","question_type":"open-ended","subject":"Computer Science","prompt":"<video>Given that n is the number of elements and k is the range of input values. The worst-case time complexity of the demonstrated algorithm is O(____)."}]},{"id":"validation_776","media":["validation_776_0.mp4"],"messages":[{"role":"user","question":"The video shows the development of a bad lifestyle associated with a variety of diseases, which is the most related?","answer":"E","hint":"","options":{"A":"Gastric cancer","B":"Chronic obstructive lung disease","C":"Bladder cancer","D":"Hypertension","E":"Lung cancer"},"choices":[],"video_id":"Basic_Medicine_22","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>The video shows the development of a bad lifestyle associated with a variety of diseases, which is the most related?\nA. Gastric cancer\nB. Chronic obstructive lung disease\nC. Bladder cancer\nD. Hypertension\nE. Lung cancer\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_777","media":["validation_777_0.mp4"],"messages":[{"role":"user","question":"Based on the urban landscape depicted in the video, what phase of the economic cycle might the economy be in?","answer":"expansion","hint":"","options":{},"choices":[],"video_id":"Economics_12","question_type":"open-ended","subject":"Economics","prompt":"<video>Based on the urban landscape depicted in the video, what phase of the economic cycle might the economy be in?"}]},{"id":"validation_778","media":["validation_778_0.mp4"],"messages":[{"role":"user","question":"The scene depicted in the video is most likely to occur in which stage of the economic cycle?","answer":"A","hint":"","options":{"A":"expansion","B":"trough","C":"stagnation","D":"contraction","E":"recession"},"choices":[],"video_id":"Economics_12","question_type":"multiple-choice","subject":"Economics","prompt":"<video>The scene depicted in the video is most likely to occur in which stage of the economic cycle?\nA. expansion\nB. trough\nC. stagnation\nD. contraction\nE. recession\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_779","media":["validation_779_0.mp4"],"messages":[{"role":"user","question":"Based on the economic activity depicted in the video, which of the following sectors is an equity analyst most likely to recommend overweighting in an investment portfolio?","answer":"E","hint":"","options":{"A":"Utilities","B":"Consumer Staples","C":"Healthcare","D":"Basic Materials","E":"Consumer Discretionary"},"choices":[],"video_id":"Economics_12","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Based on the economic activity depicted in the video, which of the following sectors is an equity analyst most likely to recommend overweighting in an investment portfolio?\nA. Utilities\nB. Consumer Staples\nC. Healthcare\nD. Basic Materials\nE. Consumer Discretionary\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_78","media":["validation_78_0.mp4"],"messages":[{"role":"user","question":"Why do mobile phone electromagnetic wave signal strength measurements gradually weaken?","answer":"C","hint":"","options":{"A":"As the call progresses, the power of the electromagnetic waves emitted by the mobile phone weakens.","B":"A medium that blocks the propagation of electromagnetic waves is added between the mobile phone and the measuring device.","C":"As the mobile phone gets farther and farther away from the measuring device, the intensity of the electromagnetic waves received by the measuring device weakens.","D":"When the mobile phone heats up, the power of the electromagnetic waves emitted by the mobile phone weakens.","E":"The movement of mobile phones causes the electromagnetic wave signals emitted by mobile phones to weaken."},"choices":[],"video_id":"Electromagnetism_8","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why do mobile phone electromagnetic wave signal strength measurements gradually weaken?\nA. As the call progresses, the power of the electromagnetic waves emitted by the mobile phone weakens.\nB. A medium that blocks the propagation of electromagnetic waves is added between the mobile phone and the measuring device.\nC. As the mobile phone gets farther and farther away from the measuring device, the intensity of the electromagnetic waves received by the measuring device weakens.\nD. When the mobile phone heats up, the power of the electromagnetic waves emitted by the mobile phone weakens.\nE. The movement of mobile phones causes the electromagnetic wave signals emitted by mobile phones to weaken.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_780","media":["validation_780_0.mp4"],"messages":[{"role":"user","question":"Based on the urban scene depicted in the video, an economic analyst is preparing a forecast. Considering these observations, which of the following is the analyst most likely to adjust upward in their economic model, and which sector is expected to benefit the most from this adjustment?","answer":"B","hint":"","options":{"A":"Lower inflation expectations; Basic Materials sector.","B":"Higher consumer confidence levels; Consumer Discretionary sector.","C":"Increased unemployment rates; Healthcare sector.","D":"Decreased GDP growth forecasts; Utilities sector.","E":"Anticipated interest rate cuts; Financial Services sector."},"choices":[],"video_id":"Economics_12","question_type":"multiple-choice","subject":"Economics","prompt":"<video>Based on the urban scene depicted in the video, an economic analyst is preparing a forecast. Considering these observations, which of the following is the analyst most likely to adjust upward in their economic model, and which sector is expected to benefit the most from this adjustment?\nA. Lower inflation expectations; Basic Materials sector.\nB. Higher consumer confidence levels; Consumer Discretionary sector.\nC. Increased unemployment rates; Healthcare sector.\nD. Decreased GDP growth forecasts; Utilities sector.\nE. Anticipated interest rate cuts; Financial Services sector.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_781","media":["validation_781_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, it is an example of achieving economies of scale through **_______ economies**.","answer":"technical","hint":"","options":{},"choices":[],"video_id":"Economics_13","question_type":"open-ended","subject":"Economics","prompt":"<video>As shown in the video, it is an example of achieving economies of scale through **_______ economies**."}]},{"id":"validation_782","media":["validation_782_0.mp4"],"messages":[{"role":"user","question":"In the video, the black particles most likely represent the administration of **_____**.","answer":"Antacids","hint":"","options":{},"choices":[],"video_id":"Pharmacy_25","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>In the video, the black particles most likely represent the administration of **_____**."}]},{"id":"validation_783","media":["validation_783_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following processes is most directly illustrated the importance of potential drug-drug interactions?","answer":"A","hint":"","options":{"A":"Gastric dissolution and physical interaction of concurrently administered oral medications","B":"Intestinal absorption of orally administered drugs","C":"Metabolic degradation of drugs by stomach acid","D":"Enzymatic activation of prodrugs in the gastrointestinal tract","E":"Biliary excretion of drugs and enterohepatic recirculation"},"choices":[],"video_id":"Pharmacy_25","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the video, which of the following processes is most directly illustrated the importance of potential drug-drug interactions?\nA. Gastric dissolution and physical interaction of concurrently administered oral medications\nB. Intestinal absorption of orally administered drugs\nC. Metabolic degradation of drugs by stomach acid\nD. Enzymatic activation of prodrugs in the gastrointestinal tract\nE. Biliary excretion of drugs and enterohepatic recirculation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_784","media":["validation_784_0.mp4"],"messages":[{"role":"user","question":"The man's demonstration is an example of a(n) ______ algorithm.","answer":"greedy","hint":"","options":{},"choices":[],"video_id":"Computer_Science_42","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The man's demonstration is an example of a(n) ______ algorithm."}]},{"id":"validation_785","media":["validation_785_0.mp4"],"messages":[{"role":"user","question":"What kind of idea is used in the video to pack these books in possibly fewer packages?","answer":"B","hint":"","options":{"A":"divide and conquer","B":"greedy algorithm","C":"linear programming","D":"dynamic programming","E":"genetic algorithm"},"choices":[],"video_id":"Computer_Science_42","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of idea is used in the video to pack these books in possibly fewer packages?\nA. divide and conquer\nB. greedy algorithm\nC. linear programming\nD. dynamic programming\nE. genetic algorithm\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_786","media":["validation_786_0.mp4"],"messages":[{"role":"user","question":"Based on the content of the video, it demonstrates a _____ network topology.","answer":"tree","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_19","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>Based on the content of the video, it demonstrates a _____ network topology."}]},{"id":"validation_787","media":["validation_787_0.mp4"],"messages":[{"role":"user","question":"Which characteristic of digital communication is shown in the video? ","answer":"E","hint":"","options":{"A":"Symmetry","B":"Redundancy","C":"Latency","D":"Specificity","E":"Scalability"},"choices":[],"video_id":"Electronics_and_Communication_19","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which characteristic of digital communication is shown in the video? \nA. Symmetry\nB. Redundancy\nC. Latency\nD. Specificity\nE. Scalability\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_788","media":["validation_788_0.mp4"],"messages":[{"role":"user","question":"Based on the network structure described in the video and the issue encountered at the end of the task, what is the most likely network problem?","answer":"B","hint":"","options":{"A":"Ring topology facing a single point of failure causing network disruption.","B":"Tree topology suffering from network congestion due to high bandwidth usage from numerous connected devices.","C":"Mesh topology encountering complex routing leading to increased latency.","D":"Star topology with central hub overload causing network bottleneck.","E":"Hybrid topology causing compatibility issues between different network segments."},"choices":[],"video_id":"Electronics_and_Communication_19","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Based on the network structure described in the video and the issue encountered at the end of the task, what is the most likely network problem?\nA. Ring topology facing a single point of failure causing network disruption.\nB. Tree topology suffering from network congestion due to high bandwidth usage from numerous connected devices.\nC. Mesh topology encountering complex routing leading to increased latency.\nD. Star topology with central hub overload causing network bottleneck.\nE. Hybrid topology causing compatibility issues between different network segments.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_789","media":["validation_789_0.mp4"],"messages":[{"role":"user","question":"At the end of the video, the structure into which the molecule enters is called the ____ .","answer":"proximal tubule","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_27","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>At the end of the video, the structure into which the molecule enters is called the ____ ."}]},{"id":"validation_79","media":["validation_79_0.mp4"],"messages":[{"role":"user","question":"The video demonstrates the ________ effect.","answer":"triboelectric (static electricity)","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_9","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>The video demonstrates the ________ effect."}]},{"id":"validation_790","media":["validation_790_0.mp4"],"messages":[{"role":"user","question":"Based on the experiments and observations described, the metal being demonstrated is most likely **_______**.","answer":"Lithium","hint":"","options":{},"choices":[],"video_id":"Chemistry_10","question_type":"open-ended","subject":"Chemistry","prompt":"<video>Based on the experiments and observations described, the metal being demonstrated is most likely **_______**."}]},{"id":"validation_791","media":["validation_791_0.mp4"],"messages":[{"role":"user","question":"What chemical reaction is most likely occurring with the solid in the video?","answer":"A","hint":"","options":{"A":"2Li+2H2O->2LiOH+H2","B":"Ba+2H2O->Ba(OH)2+H2","C":"Ca+2H2O->Ca(OH)2+H2","D":"Fe+2HCl->FeCl2+H2","E":"Mg+2HCl->MgCl2+H2"},"choices":[],"video_id":"Chemistry_10","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>What chemical reaction is most likely occurring with the solid in the video?\nA. 2Li+2H2O->2LiOH+H2\nB. Ba+2H2O->Ba(OH)2+H2\nC. Ca+2H2O->Ca(OH)2+H2\nD. Fe+2HCl->FeCl2+H2\nE. Mg+2HCl->MgCl2+H2\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_792","media":["validation_792_0.mp4"],"messages":[{"role":"user","question":"The beta of the company shown in the video is most likely","answer":"E","hint":"","options":{"A":"Negative beta (beta less than 0)","B":"Beta approximately equal to 0","C":"Beta between 0 and 1","D":"Beta equal to 1","E":"Beta greater than 1"},"choices":[],"video_id":"Economics_14","question_type":"multiple-choice","subject":"Economics","prompt":"<video>The beta of the company shown in the video is most likely\nA. Negative beta (beta less than 0)\nB. Beta approximately equal to 0\nC. Beta between 0 and 1\nD. Beta equal to 1\nE. Beta greater than 1\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_793","media":["validation_793_0.mp4"],"messages":[{"role":"user","question":"For the company and its challenges shown in the video, which of the following actions by the central bank would be the most appropriate short-term policy response?","answer":"B","hint":"","options":{"A":"Increase the benchmark interest rate to combat inflation.","B":"Provide emergency liquidity support to financial institutions.","C":"Implement austerity measures to reduce government debt.","D":"Enforce stricter lending standards for new mortgages.","E":"Increase reserve requirements for commercial banks."},"choices":[],"video_id":"Economics_14","question_type":"multiple-choice","subject":"Economics","prompt":"<video>For the company and its challenges shown in the video, which of the following actions by the central bank would be the most appropriate short-term policy response?\nA. Increase the benchmark interest rate to combat inflation.\nB. Provide emergency liquidity support to financial institutions.\nC. Implement austerity measures to reduce government debt.\nD. Enforce stricter lending standards for new mortgages.\nE. Increase reserve requirements for commercial banks.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_794","media":["validation_794_0.mp4"],"messages":[{"role":"user","question":"The video demonstrates two movements in total. Which movement is closer to the correct interpretation of the twin paradox?","answer":"D","hint":"","options":{"A":"No clear answer","B":"Second one","C":"Neither","D":"First one","E":"Both"},"choices":[],"video_id":"Modern_Physics_15","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>The video demonstrates two movements in total. Which movement is closer to the correct interpretation of the twin paradox?\nA. No clear answer\nB. Second one\nC. Neither\nD. First one\nE. Both\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_795","media":["validation_795_0.mp4"],"messages":[{"role":"user","question":"What management could lead to the situation shown in the video?","answer":"A","hint":"","options":{"A":"Bureaucratic Management","B":"Participative Management","C":"Scientific Management","D":"Task-Oriented Management","E":"Decentralized Management"},"choices":[],"video_id":"Management_13","question_type":"multiple-choice","subject":"Management","prompt":"<video>What management could lead to the situation shown in the video?\nA. Bureaucratic Management\nB. Participative Management\nC. Scientific Management\nD. Task-Oriented Management\nE. Decentralized Management\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_796","media":["validation_796_0.mp4"],"messages":[{"role":"user","question":" Based on the video, which management approach is primarily demonstrated by the office staff's behavior?","answer":"A","hint":"","options":{"A":"Bureaucratic Management emphasizing hierarchical authority and strict adherence to rules.","B":"Human Relations Management focusing on employee well-being and interpersonal relationships.","C":"Contingency Management adapting organizational practices based on situational needs.","D":"Scientific Management aiming for efficiency through task standardization and simplification.","E":"Transformational Leadership inspiring and motivating employees toward a shared vision."},"choices":[],"video_id":"Management_13","question_type":"multiple-choice","subject":"Management","prompt":"<video> Based on the video, which management approach is primarily demonstrated by the office staff's behavior?\nA. Bureaucratic Management emphasizing hierarchical authority and strict adherence to rules.\nB. Human Relations Management focusing on employee well-being and interpersonal relationships.\nC. Contingency Management adapting organizational practices based on situational needs.\nD. Scientific Management aiming for efficiency through task standardization and simplification.\nE. Transformational Leadership inspiring and motivating employees toward a shared vision.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_797","media":["validation_797_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which management approach would BEST enable the staff to consider situational variables and adjust their behaviors?","answer":"E","hint":"","options":{"A":"Scientific Management Theory, emphasizing task optimization and standardization to increase efficiency.","B":"Human Relations Approach, highlighting the importance of employee morale and interpersonal relationships among staff.","C":"Transactional Leadership, centered on exchanges between leaders and followers to meet established goals through rewards and punishments.","D":"Total Quality Management (TQM), advocating continuous improvement and customer satisfaction through employee involvement.","E":"Contingency Management Theory, suggesting that managerial actions should adapt to the particulars of each situation."},"choices":[],"video_id":"Management_13","question_type":"multiple-choice","subject":"Management","prompt":"<video>Based on the video, which management approach would BEST enable the staff to consider situational variables and adjust their behaviors?\nA. Scientific Management Theory, emphasizing task optimization and standardization to increase efficiency.\nB. Human Relations Approach, highlighting the importance of employee morale and interpersonal relationships among staff.\nC. Transactional Leadership, centered on exchanges between leaders and followers to meet established goals through rewards and punishments.\nD. Total Quality Management (TQM), advocating continuous improvement and customer satisfaction through employee involvement.\nE. Contingency Management Theory, suggesting that managerial actions should adapt to the particulars of each situation.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_798","media":["validation_798_0.mp4"],"messages":[{"role":"user","question":"The type of substance presented in the video is __________.","answer":"protein","hint":"","options":{},"choices":[],"video_id":"Biology_8","question_type":"open-ended","subject":"Biology","prompt":"<video>The type of substance presented in the video is __________."}]},{"id":"validation_799","media":["validation_799_0.mp4"],"messages":[{"role":"user","question":"What functions might the compounds shown in the video NOT have?","answer":"A","hint":"","options":{"A":"forming transcription templates","B":"catalyzing many chemical reactions","C":"maintaining structures","D":"sensing signals","E":"expressing genetic information"},"choices":[],"video_id":"Biology_8","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What functions might the compounds shown in the video NOT have?\nA. forming transcription templates\nB. catalyzing many chemical reactions\nC. maintaining structures\nD. sensing signals\nE. expressing genetic information\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_8","media":["validation_8_0.mp4"],"messages":[{"role":"user","question":"Which law is behind the above phenomenon?","answer":"A","hint":"","options":{"A":"Lenz’s Law","B":"Kepler’s Third Law","C":"Newton’s First Law","D":"Hooke’s Law","E":"Coulomb's Law"},"choices":[],"video_id":"Electromagnetism_1","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Which law is behind the above phenomenon?\nA. Lenz’s Law\nB. Kepler’s Third Law\nC. Newton’s First Law\nD. Hooke’s Law\nE. Coulomb's Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_80","media":["validation_80_0.mp4"],"messages":[{"role":"user","question":"Can the object in a video become the subject matter of a contract governed by CISG?","answer":"D","hint":"","options":{"A":"No relevant regulations","B":"If the video object has independent legal standing","C":"If the video is part of a sales demonstration","D":"No","E":"Yes"},"choices":[],"video_id":"Law_1","question_type":"multiple-choice","subject":"Law","prompt":"<video>Can the object in a video become the subject matter of a contract governed by CISG?\nA. No relevant regulations\nB. If the video object has independent legal standing\nC. If the video is part of a sales demonstration\nD. No\nE. Yes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_800","media":["validation_800_0.mp4"],"messages":[{"role":"user","question":"Which of the following molecules is primarily composed of the substances shown in the video?","answer":"D","hint":"","options":{"A":"Phospholipids in cell membranes","B":"Genetic material that stores hereditary information","C":"Testosterone","D":"Hormones like insulin that regulate glucose levels","E":"Cellulose in plant cell walls"},"choices":[],"video_id":"Biology_8","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Which of the following molecules is primarily composed of the substances shown in the video?\nA. Phospholipids in cell membranes\nB. Genetic material that stores hereditary information\nC. Testosterone\nD. Hormones like insulin that regulate glucose levels\nE. Cellulose in plant cell walls\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_801","media":["validation_801_0.mp4"],"messages":[{"role":"user","question":"What might NOT be the function of this kind of substance shown in the video?","answer":"A","hint":"","options":{"A":"forming transcription templates","B":"catalyzing many chemical reactions","C":"maintaining structures","D":"sensing signals","E":"generating movements"},"choices":[],"video_id":"Biology_8","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What might NOT be the function of this kind of substance shown in the video?\nA. forming transcription templates\nB. catalyzing many chemical reactions\nC. maintaining structures\nD. sensing signals\nE. generating movements\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_802","media":["validation_802_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following best explains the reason of the shown abnormality?","answer":"C","hint":"","options":{"A":"DNA replication errors causes genetic mutations, which leads to the shown abnormality.","B":"The error of aminoacyl tRNA synthetase (aaRS) in translation period results in the production of abnormal nucleic acids that interfere with protein synthesis.","C":"The additional chromosome causes an overexpression of certain genes, leading to an imbalance of proteins that regulate development.","D":"The additional chromosome causes a disruption in the regulation of cell division, leading to an overproduction of certain proteins that interfere with normal cellular function and development.","E":"The surplus genetic material leads to excessive lipid accumulation, altering cell membrane composition."},"choices":[],"video_id":"Biology_8","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Based on the video, which of the following best explains the reason of the shown abnormality?\nA. DNA replication errors causes genetic mutations, which leads to the shown abnormality.\nB. The error of aminoacyl tRNA synthetase (aaRS) in translation period results in the production of abnormal nucleic acids that interfere with protein synthesis.\nC. The additional chromosome causes an overexpression of certain genes, leading to an imbalance of proteins that regulate development.\nD. The additional chromosome causes a disruption in the regulation of cell division, leading to an overproduction of certain proteins that interfere with normal cellular function and development.\nE. The surplus genetic material leads to excessive lipid accumulation, altering cell membrane composition.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_803","media":["validation_803_0.mp4"],"messages":[{"role":"user","question":"In the process described in the video, the device utilizes the principle of ___ to obtain energy for human use.","answer":"electromagnetic induction","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_28","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the process described in the video, the device utilizes the principle of ___ to obtain energy for human use."}]},{"id":"validation_804","media":["validation_804_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most plausible explanation for the observed difference in bullet Aguila ammunition and Federal Premium ammunition?","answer":"A","hint":"","options":{"A":"The Aguila ammunition has a lower muzzle velocity than the Federal Premium ammunition, resulting in greater bullet drop over the distance to the target.","B":"The Aguila bullets have a higher mass than the Federal Premium bullets, causing them to decelerate faster due to air resistance and impact lower on the target.","C":"The sandbag's position affects the rifle's recoil differently with the Aguila ammunition, causing the shots to impact lower due to mechanical differences.","D":"The Aguila ammunition has a higher ballistic coefficient, which causes it to drop more over the same distance due to decreased air resistance.","E":"Temperature differences between the ammunition types cause variations in internal ballistics, leading to differences in bullet impact positions."},"choices":[],"video_id":"Mechanics_28","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following is the most plausible explanation for the observed difference in bullet Aguila ammunition and Federal Premium ammunition?\nA. The Aguila ammunition has a lower muzzle velocity than the Federal Premium ammunition, resulting in greater bullet drop over the distance to the target.\nB. The Aguila bullets have a higher mass than the Federal Premium bullets, causing them to decelerate faster due to air resistance and impact lower on the target.\nC. The sandbag's position affects the rifle's recoil differently with the Aguila ammunition, causing the shots to impact lower due to mechanical differences.\nD. The Aguila ammunition has a higher ballistic coefficient, which causes it to drop more over the same distance due to decreased air resistance.\nE. Temperature differences between the ammunition types cause variations in internal ballistics, leading to differences in bullet impact positions.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_805","media":["validation_805_0.mp4"],"messages":[{"role":"user","question":"According to the knowledge point, the demonstrated algorithm is only possible on directed graphs that are **_____**.","answer":"acyclic","hint":"","options":{},"choices":[],"video_id":"Computer_Science_43","question_type":"open-ended","subject":"Computer Science","prompt":"<video>According to the knowledge point, the demonstrated algorithm is only possible on directed graphs that are **_____**."}]},{"id":"validation_806","media":["validation_806_0.mp4"],"messages":[{"role":"user","question":"In the video, the sequence of word exemplifies the concept of **__________** in linguistics.","answer":"Phonemic opposition","hint":"","options":{},"choices":[],"video_id":"Literature_9","question_type":"open-ended","subject":"Literature","prompt":"<video>In the video, the sequence of word exemplifies the concept of **__________** in linguistics."}]},{"id":"validation_807","media":["validation_807_0.mp4"],"messages":[{"role":"user","question":"The pronunciation difference among these words in English represents which of the following phenomena?","answer":"D","hint":"","options":{"A":"Phonetic environment","B":"Allophonic variation","C":"Prosodic opposition","D":"Phonemic opposition","E":"Morphological variation"},"choices":[],"video_id":"Literature_9","question_type":"multiple-choice","subject":"Literature","prompt":"<video>The pronunciation difference among these words in English represents which of the following phenomena?\nA. Phonetic environment\nB. Allophonic variation\nC. Prosodic opposition\nD. Phonemic opposition\nE. Morphological variation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_808","media":["validation_808_0.mp4"],"messages":[{"role":"user","question":"The formation of the unique mountains are primarily due to the presence of **______** acting as a cementing agent.","answer":"iron oxide","hint":"","options":{},"choices":[],"video_id":"Civil_Engineering_26","question_type":"open-ended","subject":"Civil Engineering","prompt":"<video>The formation of the unique mountains are primarily due to the presence of **______** acting as a cementing agent."}]},{"id":"validation_809","media":["validation_809_0.mp4"],"messages":[{"role":"user","question":"Which of the following is included in the diagnostic criteria for this disease?","answer":"E","hint":"","options":{"A":"Identification of one related mutation","B":"A decreased sweat chloride concentration on two or more occasions","C":"Decreased levels of immunoreactive trypsinogen (IRT) detected in newborn screening","D":"Presence of intermittent fever and chills","E":"Demonstration of abnormal epithelial nasal ion transport"},"choices":[],"video_id":"Basic_Medicine_23","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following is included in the diagnostic criteria for this disease?\nA. Identification of one related mutation\nB. A decreased sweat chloride concentration on two or more occasions\nC. Decreased levels of immunoreactive trypsinogen (IRT) detected in newborn screening\nD. Presence of intermittent fever and chills\nE. Demonstration of abnormal epithelial nasal ion transport\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_81","media":["validation_81_0.mp4"],"messages":[{"role":"user","question":"Why is aluminum foil attracted to the rod in the video?","answer":"E","hint":"","options":{"A":"The aluminum foil becomes charged when rubbed against the cloth, attracting the rod.","B":"The aluminum foil is charged, the rod is not, and they attract each other.","C":"The aluminum foil and the rod have different charges and they attract each other.","D":"The aluminum foil contains water and has surface tension when it comes into contact with the rod.","E":"The rod becomes charged when rubbed against the cloth, attracting the aluminum foil."},"choices":[],"video_id":"Electromagnetism_9","question_type":"multiple-choice","subject":"Electromagnetism","prompt":"<video>Why is aluminum foil attracted to the rod in the video?\nA. The aluminum foil becomes charged when rubbed against the cloth, attracting the rod.\nB. The aluminum foil is charged, the rod is not, and they attract each other.\nC. The aluminum foil and the rod have different charges and they attract each other.\nD. The aluminum foil contains water and has surface tension when it comes into contact with the rod.\nE. The rod becomes charged when rubbed against the cloth, attracting the aluminum foil.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_810","media":["validation_810_0.mp4"],"messages":[{"role":"user","question":"The system in the video operates at a specific wavelength magnitude because it targets the absorption peak of ______.","answer":"Hemoglobin","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_21","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>The system in the video operates at a specific wavelength magnitude because it targets the absorption peak of ______."}]},{"id":"validation_811","media":["validation_811_0.mp4"],"messages":[{"role":"user","question":"What kind of treatment is shown in the video?","answer":"D","hint":"","options":{"A":"Physiotherapy","B":"Surgery","C":"Immunotherapy","D":"Photodynamic Therapy","E":"Chemotherapy"},"choices":[],"video_id":"Biomedical_Engineering_21","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of treatment is shown in the video?\nA. Physiotherapy\nB. Surgery\nC. Immunotherapy\nD. Photodynamic Therapy\nE. Chemotherapy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_812","media":["validation_812_0.mp4"],"messages":[{"role":"user","question":"Based on the information provided, which of the following is the most likely mechanism by which the treatment achieves its therapeutic effect?","answer":"E","hint":"","options":{"A":"Photothermal coagulation of the retinal pigment epithelium to induce scarring","B":"Photodisruption of vitreous floaters using ultrashort laser pulses","C":"Selective stimulation of retinal cells to promote angiogenesis","D":"Activation of photosensitizing agents to produce cytotoxic reactive oxygen species","E":"Sub-threshold laser therapy leading to upregulation of cytokines that reduce edema"},"choices":[],"video_id":"Biomedical_Engineering_21","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Based on the information provided, which of the following is the most likely mechanism by which the treatment achieves its therapeutic effect?\nA. Photothermal coagulation of the retinal pigment epithelium to induce scarring\nB. Photodisruption of vitreous floaters using ultrashort laser pulses\nC. Selective stimulation of retinal cells to promote angiogenesis\nD. Activation of photosensitizing agents to produce cytotoxic reactive oxygen species\nE. Sub-threshold laser therapy leading to upregulation of cytokines that reduce edema\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_813","media":["validation_813_0.mp4"],"messages":[{"role":"user","question":" Considering the features demonstrated, which of the following most directly contributes to minimizing collateral damage to healthy retinal tissue during the treatment?","answer":"D","hint":"","options":{"A":"The use of a 577 nm wavelength laser that is less absorbed by melanin, reducing thermal injury to the retinal pigment epithelium.","B":"The ability to apply high-energy laser pulses in continuous-wave mode to effectively coagulate abnormal vessels.","C":"The integration of pre-treatment imaging modalities for precise planning of laser spot placement.","D":"The application of sub-threshold microsecond laser pulses guided by real-time eye tracking and navigation.","E":"The use of autofluorescence imaging to monitor retinal metabolic activity during treatment."},"choices":[],"video_id":"Biomedical_Engineering_21","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video> Considering the features demonstrated, which of the following most directly contributes to minimizing collateral damage to healthy retinal tissue during the treatment?\nA. The use of a 577 nm wavelength laser that is less absorbed by melanin, reducing thermal injury to the retinal pigment epithelium.\nB. The ability to apply high-energy laser pulses in continuous-wave mode to effectively coagulate abnormal vessels.\nC. The integration of pre-treatment imaging modalities for precise planning of laser spot placement.\nD. The application of sub-threshold microsecond laser pulses guided by real-time eye tracking and navigation.\nE. The use of autofluorescence imaging to monitor retinal metabolic activity during treatment.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_814","media":["validation_814_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the primary mode of heat transfer  is **___**.","answer":"convection","hint":"","options":{},"choices":[],"video_id":"Thermodynamics_11","question_type":"open-ended","subject":"Thermodynamics","prompt":"<video>Based on the video, the primary mode of heat transfer  is **___**."}]},{"id":"validation_815","media":["validation_815_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements correctly explains the primary thermodynamic processes occurring in the video and accounts for the observed smoke plume?","answer":"C","hint":"","options":{"A":"The red-orange glow is due to an exothermic chemical reaction releasing heat; the plume thins because the temperature decreases with height, causing the smoke to condense.","B":"The plume rises due to thermal conduction heating the smoke; it thins because the smoke particles evaporate into gas at higher altitudes.","C":"The glow indicates a heat source causing thermal convection; the plume thins as it rises because of diffusion and mixing with surrounding air, reducing the concentration of smoke particles.","D":"The smoke rises due to buoyancy from increased air pressure at the bottom; it thins because particles settle under gravity as they rise.","E":"The glow heats the air by radiation; the plume thins due to the decreasing density of the air reducing the smoke's upward velocity."},"choices":[],"video_id":"Thermodynamics_11","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following statements correctly explains the primary thermodynamic processes occurring in the video and accounts for the observed smoke plume?\nA. The red-orange glow is due to an exothermic chemical reaction releasing heat; the plume thins because the temperature decreases with height, causing the smoke to condense.\nB. The plume rises due to thermal conduction heating the smoke; it thins because the smoke particles evaporate into gas at higher altitudes.\nC. The glow indicates a heat source causing thermal convection; the plume thins as it rises because of diffusion and mixing with surrounding air, reducing the concentration of smoke particles.\nD. The smoke rises due to buoyancy from increased air pressure at the bottom; it thins because particles settle under gravity as they rise.\nE. The glow heats the air by radiation; the plume thins due to the decreasing density of the air reducing the smoke's upward velocity.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_816","media":["validation_816_0.mp4"],"messages":[{"role":"user","question":"Based on the incident described in the video, this natural event would be classified as an example of ______________.","answer":"force majeure","hint":"","options":{},"choices":[],"video_id":"Law_10","question_type":"open-ended","subject":"Law","prompt":"<video>Based on the incident described in the video, this natural event would be classified as an example of ______________."}]},{"id":"validation_817","media":["validation_817_0.mp4"],"messages":[{"role":"user","question":"If the situation in the video makes the contract impossible to perform, who will bear the responsibility?","answer":"C","hint":"","options":{"A":"the local government","B":"the monitoring agency","C":"nobody","D":"the buyer","E":"the seller"},"choices":[],"video_id":"Law_10","question_type":"multiple-choice","subject":"Law","prompt":"<video>If the situation in the video makes the contract impossible to perform, who will bear the responsibility?\nA. the local government\nB. the monitoring agency\nC. nobody\nD. the buyer\nE. the seller\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_818","media":["validation_818_0.mp4"],"messages":[{"role":"user","question":"Under contract law, in the scenario shown in the video, which of the following legal principles can a company rely on at most to avoid liability for contract performance?","answer":"E","hint":"","options":{"A":"Doctrine of Anticipatory Repudiation","B":"Doctrine of Impossibility","C":"Doctrine of Frustration of Purpose","D":"Doctrine of Substantial Performance","E":"Doctrine of Impossibility and Doctrine of Frustration of Purpose"},"choices":[],"video_id":"Law_10","question_type":"multiple-choice","subject":"Law","prompt":"<video>Under contract law, in the scenario shown in the video, which of the following legal principles can a company rely on at most to avoid liability for contract performance?\nA. Doctrine of Anticipatory Repudiation\nB. Doctrine of Impossibility\nC. Doctrine of Frustration of Purpose\nD. Doctrine of Substantial Performance\nE. Doctrine of Impossibility and Doctrine of Frustration of Purpose\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_819","media":["validation_819_0.mp4"],"messages":[{"role":"user","question":"Under contract law, which legal doctrine is most likely to excuse the construction company's non-performance?","answer":"E","hint":"","options":{"A":"Doctrine of Substantial Performance","B":"Doctrine of Anticipatory Repudiation","C":"Doctrine of Commercial Impracticability","D":"Doctrine of Frustration of Purpose","E":"Doctrine of Impossibility"},"choices":[],"video_id":"Law_10","question_type":"multiple-choice","subject":"Law","prompt":"<video>Under contract law, which legal doctrine is most likely to excuse the construction company's non-performance?\nA. Doctrine of Substantial Performance\nB. Doctrine of Anticipatory Repudiation\nC. Doctrine of Commercial Impracticability\nD. Doctrine of Frustration of Purpose\nE. Doctrine of Impossibility\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_82","media":["validation_82_0.mp4"],"messages":[{"role":"user","question":"the standard deviation of the voltage measurements is approximately _____ microvolts","answer":"150 µV","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_0","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>the standard deviation of the voltage measurements is approximately _____ microvolts"}]},{"id":"validation_820","media":["validation_820_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, after consuming certain foods, the secretion of _______ is inhibited, helping the body maintain homeostasis.","answer":"antidiuretic hormone","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_28","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>As shown in the video, after consuming certain foods, the secretion of _______ is inhibited, helping the body maintain homeostasis."}]},{"id":"validation_821","media":["validation_821_0.mp4"],"messages":[{"role":"user","question":"In the event depicted in the video, an individual experiences changes in body fluids after consuming certain foods. To counteract this change, which physiological mechanism is primarily activated to promote the restoration of homeostasis?","answer":"B","hint":"","options":{"A":"Increased secretion of antidiuretic hormone (vasopressin)","B":"Release of atrial natriuretic peptide from the cardiac atria","C":"Enhanced release of aldosterone from the adrenal cortex","D":"Secretion of renin from the juxtaglomerular cells in the kidneys","E":"Production of angiotensin II via the renin-angiotensin system"},"choices":[],"video_id":"Clinical_Medicine_28","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>In the event depicted in the video, an individual experiences changes in body fluids after consuming certain foods. To counteract this change, which physiological mechanism is primarily activated to promote the restoration of homeostasis?\nA. Increased secretion of antidiuretic hormone (vasopressin)\nB. Release of atrial natriuretic peptide from the cardiac atria\nC. Enhanced release of aldosterone from the adrenal cortex\nD. Secretion of renin from the juxtaglomerular cells in the kidneys\nE. Production of angiotensin II via the renin-angiotensin system\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_822","media":["validation_822_0.mp4"],"messages":[{"role":"user","question":"According to the data analysis in the video, what law does the image change satisfy?","answer":"C","hint":"","options":{"A":"Edholm's Law","B":"Bell's Law","C":"Moore's Law","D":"Amara's Law","E":"Metcalfe's Law"},"choices":[],"video_id":"Electronics_and_Communication_20","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>According to the data analysis in the video, what law does the image change satisfy?\nA. Edholm's Law\nB. Bell's Law\nC. Moore's Law\nD. Amara's Law\nE. Metcalfe's Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_823","media":["validation_823_0.mp4"],"messages":[{"role":"user","question":"If the situation demonstrated in the video occurs in the telecommunications field, which law or principle does it satisfy?","answer":"A","hint":"","options":{"A":"Edholm's Law","B":"Kurzweil's Law of Accelerating Returns","C":"Amara's Law","D":"Gilder's Law","E":"Metcalfe's Law"},"choices":[],"video_id":"Electronics_and_Communication_20","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>If the situation demonstrated in the video occurs in the telecommunications field, which law or principle does it satisfy?\nA. Edholm's Law\nB. Kurzweil's Law of Accelerating Returns\nC. Amara's Law\nD. Gilder's Law\nE. Metcalfe's Law\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_824","media":["validation_824_0.mp4"],"messages":[{"role":"user","question":"How does the green gear on the long rod need to move to make the short central rod rotate counterclockwise?","answer":"rotate counterclockwise","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_26","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>How does the green gear on the long rod need to move to make the short central rod rotate counterclockwise?"}]},{"id":"validation_825","media":["validation_825_0.mp4"],"messages":[{"role":"user","question":"In the final stage of the video, the modulation method used is ______.","answer":"frequency modulation","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_21","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>In the final stage of the video, the modulation method used is ______."}]},{"id":"validation_826","media":["validation_826_0.mp4"],"messages":[{"role":"user","question":"What modulation method/methods are used in this system?","answer":"A","hint":"","options":{"A":"Amplitude and frequency modulation","B":"Amplitude and phase modulation","C":"Frequency and phase modulation","D":"Phase and angle modulation","E":"Frequency modulation only"},"choices":[],"video_id":"Electronics_and_Communication_21","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>What modulation method/methods are used in this system?\nA. Amplitude and frequency modulation\nB. Amplitude and phase modulation\nC. Frequency and phase modulation\nD. Phase and angle modulation\nE. Frequency modulation only\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_827","media":["validation_827_0.mp4"],"messages":[{"role":"user","question":"Considering the characteristics of the observed signal and the setup described, which type of circuit is the technician most likely testing?","answer":"D","hint":"","options":{"A":"A linear voltage regulator circuit.","B":"An amplitude modulation (AM) radio transmitter circuit.","C":"A phase-locked loop (PLL) frequency synthesizer circuit.","D":"A switching mode power supply (SMPS) converter circuit.","E":"An audio amplifier circuit with feedback."},"choices":[],"video_id":"Electronics_and_Communication_21","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Considering the characteristics of the observed signal and the setup described, which type of circuit is the technician most likely testing?\nA. A linear voltage regulator circuit.\nB. An amplitude modulation (AM) radio transmitter circuit.\nC. A phase-locked loop (PLL) frequency synthesizer circuit.\nD. A switching mode power supply (SMPS) converter circuit.\nE. An audio amplifier circuit with feedback.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_828","media":["validation_828_0.mp4"],"messages":[{"role":"user","question":"In the video, an oscilloscope displays a signal. Assuming this period corresponds to the modulating signal, and the carrier frequency is ten times the modulating frequency, what is the frequency of the lower sideband component of the AM signal?","answer":"A","hint":"","options":{"A":"45 kHz","B":"50 kHz","C":"55 kHz","D":"60 kHz","E":"65 kHz"},"choices":[],"video_id":"Electronics_and_Communication_21","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>In the video, an oscilloscope displays a signal. Assuming this period corresponds to the modulating signal, and the carrier frequency is ten times the modulating frequency, what is the frequency of the lower sideband component of the AM signal?\nA. 45 kHz\nB. 50 kHz\nC. 55 kHz\nD. 60 kHz\nE. 65 kHz\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_829","media":["validation_829_0.mp4"],"messages":[{"role":"user","question":"The sphincter labeled as the 'cardiac sphincter' in the video is more commonly known in clinical medicine as the _______ sphincter.","answer":"Lower esophageal","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_29","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>The sphincter labeled as the 'cardiac sphincter' in the video is more commonly known in clinical medicine as the _______ sphincter."}]},{"id":"validation_83","media":["validation_83_0.mp4"],"messages":[{"role":"user","question":"What are the processing steps performed on the organ before the surgery as shown in the video?","answer":"B","hint":"","options":{"A":"The organ is transplanted directly into the patient without any processing","B":"The organ is flushed with a biological solution and decellularized","C":"The organ is frozen and used directly","D":"The organ's elasticity is tested using a mechanical device","E":"The organ is sterilized with high-temperature treatment"},"choices":[],"video_id":"Biomedical_Engineering_0","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What are the processing steps performed on the organ before the surgery as shown in the video?\nA. The organ is transplanted directly into the patient without any processing\nB. The organ is flushed with a biological solution and decellularized\nC. The organ is frozen and used directly\nD. The organ's elasticity is tested using a mechanical device\nE. The organ is sterilized with high-temperature treatment\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_830","media":["validation_830_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, a compression test is being conducted on a material. According to the video, the test is performed using _______ loading.","answer":"axial","hint":"","options":{},"choices":[],"video_id":"Materials_Science_11","question_type":"open-ended","subject":"Materials Science","prompt":"<video>As shown in the video, a compression test is being conducted on a material. According to the video, the test is performed using _______ loading."}]},{"id":"validation_831","media":["validation_831_0.mp4"],"messages":[{"role":"user","question":"The stepper motor in the video has _______ pole(s).","answer":"two","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_27","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The stepper motor in the video has _______ pole(s)."}]},{"id":"validation_832","media":["validation_832_0.mp4"],"messages":[{"role":"user","question":"The movement of tiny white dots in the video represents **_______**.","answer":"neural activity","hint":"","options":{},"choices":[],"video_id":"Neurobiology_26","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>The movement of tiny white dots in the video represents **_______**."}]},{"id":"validation_833","media":["validation_833_0.mp4"],"messages":[{"role":"user","question":"Based on the anatomical planes, The initial brain section shown in the video corresponds to the ______ plane.","answer":"coronal","hint":"","options":{},"choices":[],"video_id":"Neurobiology_27","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the anatomical planes, The initial brain section shown in the video corresponds to the ______ plane."}]},{"id":"validation_834","media":["validation_834_0.mp4"],"messages":[{"role":"user","question":"Which of the following preventive strategies is most effective in reducing the incidence of this disease in endemic regions?","answer":"B","hint":"","options":{"A":"Administration of antiretroviral therapy to the general population.","B":"Distribution and promotion of insecticide-treated bed nets and indoor residual spraying.","C":"Provision of improved sanitation and access to clean drinking water.","D":"Isolation and quarantine of infected individuals to prevent person-to-person transmission.","E":"Encouraging the use of protective masks to reduce airborne transmission."},"choices":[],"video_id":"Preventive_Medicine_10","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following preventive strategies is most effective in reducing the incidence of this disease in endemic regions?\nA. Administration of antiretroviral therapy to the general population.\nB. Distribution and promotion of insecticide-treated bed nets and indoor residual spraying.\nC. Provision of improved sanitation and access to clean drinking water.\nD. Isolation and quarantine of infected individuals to prevent person-to-person transmission.\nE. Encouraging the use of protective masks to reduce airborne transmission.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_835","media":["validation_835_0.mp4"],"messages":[{"role":"user","question":"The intersection of the two straight lines obtained in the experiment changes when?","answer":"D","hint":"","options":{"A":"the material of the object changes","B":"the density of the object changes","C":"the mass of the object changes","D":"the geometric shape of the object changes","E":"the temperature of the object changes"},"choices":[],"video_id":"Mechanical_Engineering_28","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>The intersection of the two straight lines obtained in the experiment changes when?\nA. the material of the object changes\nB. the density of the object changes\nC. the mass of the object changes\nD. the geometric shape of the object changes\nE. the temperature of the object changes\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_836","media":["validation_836_0.mp4"],"messages":[{"role":"user","question":"Which method is being used to determine this point, and why is this method effective for finding it?","answer":"B","hint":"","options":{"A":"Calculating the center of mass using mass distribution; because the object's varying density requires mass calculations at different points.","B":"Locating the centroid using the method of suspensions; because suspending the object from multiple points and tracing vertical lines allows intersection at the centroid due to uniform gravity acting on the object.","C":"Applying geometrical symmetry; because the map is symmetric, and the intersection of diagonals yields the center point.","D":"Using moments of inertia; because balancing the object around different axes locates the point where the moment is minimized.","E":"Employing the principle of least potential energy; because the object naturally aligns to minimize its potential energy at the centroid."},"choices":[],"video_id":"Mechanical_Engineering_28","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which method is being used to determine this point, and why is this method effective for finding it?\nA. Calculating the center of mass using mass distribution; because the object's varying density requires mass calculations at different points.\nB. Locating the centroid using the method of suspensions; because suspending the object from multiple points and tracing vertical lines allows intersection at the centroid due to uniform gravity acting on the object.\nC. Applying geometrical symmetry; because the map is symmetric, and the intersection of diagonals yields the center point.\nD. Using moments of inertia; because balancing the object around different axes locates the point where the moment is minimized.\nE. Employing the principle of least potential energy; because the object naturally aligns to minimize its potential energy at the centroid.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_837","media":["validation_837_0.mp4"],"messages":[{"role":"user","question":"Suppose instead that the map is made of a material with non-uniform density, increasing gradually from north to south. If the same method is used without accounting for the density variation, which of the following best describes the outcome and explains why?","answer":"A","hint":"","options":{"A":"The method will accurately locate the centroid because the technique accounts for mass distribution regardless of density variations.","B":"The method will identify the geometric center, but this point will not coincide with the true center of mass due to the non-uniform density.","C":"The method will fail entirely because non-uniform density prevents any single point of balance when processing the object in the shown way in the video.","D":"The method will inaccurately locate the center of mass because it assumes uniform density; the true center of mass shifts toward the denser southern end, and the lines drawn from the marked points will not intersect at the true center of mass.","E":"The centroid found will be the same as in the uniform density case since the shape hasn't changed, demonstrating that density variations don't affect the centroid location."},"choices":[],"video_id":"Mechanical_Engineering_28","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Suppose instead that the map is made of a material with non-uniform density, increasing gradually from north to south. If the same method is used without accounting for the density variation, which of the following best describes the outcome and explains why?\nA. The method will accurately locate the centroid because the technique accounts for mass distribution regardless of density variations.\nB. The method will identify the geometric center, but this point will not coincide with the true center of mass due to the non-uniform density.\nC. The method will fail entirely because non-uniform density prevents any single point of balance when processing the object in the shown way in the video.\nD. The method will inaccurately locate the center of mass because it assumes uniform density; the true center of mass shifts toward the denser southern end, and the lines drawn from the marked points will not intersect at the true center of mass.\nE. The centroid found will be the same as in the uniform density case since the shape hasn't changed, demonstrating that density variations don't affect the centroid location.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_838","media":["validation_838_0.mp4"],"messages":[{"role":"user","question":"Which move motion in the video takes smaller force on the upper object?","answer":"B","hint":"","options":{"A":"Unable to determine","B":"First one","C":"Second one with same height","D":"Both","E":"Second one"},"choices":[],"video_id":"Mechanics_29","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion in the video takes smaller force on the upper object?\nA. Unable to determine\nB. First one\nC. Second one with same height\nD. Both\nE. Second one\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_839","media":["validation_839_0.mp4"],"messages":[{"role":"user","question":"The animal in the video employs the antipredator strategy known as **________**.","answer":"camouflage (crypsis)","hint":"","options":{},"choices":[],"video_id":"Biology_9","question_type":"open-ended","subject":"Biology","prompt":"<video>The animal in the video employs the antipredator strategy known as **________**."}]},{"id":"validation_84","media":["validation_84_0.mp4"],"messages":[{"role":"user","question":"As the total number of voltage readings displayed by the Keysight 34461A multimeter increases, the voltage readings can be modeled as a random variable following a **______** distribution.","answer":"Gaussian","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_1","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>As the total number of voltage readings displayed by the Keysight 34461A multimeter increases, the voltage readings can be modeled as a random variable following a **______** distribution."}]},{"id":"validation_840","media":["validation_840_0.mp4"],"messages":[{"role":"user","question":"What coloration strategy did the animal switch to?","answer":"B","hint":"","options":{"A":"Batesian mimicry","B":"Camouflage","C":"Aposematism","D":"Countershading","E":"Mullerian mimicry"},"choices":[],"video_id":"Biology_9","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What coloration strategy did the animal switch to?\nA. Batesian mimicry\nB. Camouflage\nC. Aposematism\nD. Countershading\nE. Mullerian mimicry\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_841","media":["validation_841_0.mp4"],"messages":[{"role":"user","question":"The virus shown in the video belongs to the virus family known as **_____**.","answer":"Filoviridae","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_0","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>The virus shown in the video belongs to the virus family known as **_____**."}]},{"id":"validation_842","media":["validation_842_0.mp4"],"messages":[{"role":"user","question":"Which of the following virus does it belong to?","answer":"C","hint":"","options":{"A":"Hepatitis A virus","B":"Measles virus","C":"Regional hemorrhagic fever viruses","D":"Human papillomavirus","E":"Arboviral encephalitis viruses"},"choices":[],"video_id":"Basic_Medicine_0","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following virus does it belong to?\nA. Hepatitis A virus\nB. Measles virus\nC. Regional hemorrhagic fever viruses\nD. Human papillomavirus\nE. Arboviral encephalitis viruses\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_843","media":["validation_843_0.mp4"],"messages":[{"role":"user","question":"What is the most likely type of virus shown in the video?","answer":"E","hint":"","options":{"A":"Hantavirus","B":"Dengue virus","C":"Lassa virus","D":"Rabies virus","E":"Ebola virus"},"choices":[],"video_id":"Basic_Medicine_0","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What is the most likely type of virus shown in the video?\nA. Hantavirus\nB. Dengue virus\nC. Lassa virus\nD. Rabies virus\nE. Ebola virus\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_844","media":["validation_844_0.mp4"],"messages":[{"role":"user","question":"Which of the following best describes the virus's characteristics in terms of its taxonomic family, genome type, and morphology?","answer":"E","hint":"","options":{"A":"A virus from the family Flaviviridae, enveloped, icosahedral nucleocapsid, single-stranded positive-sense RNA genome.","B":"A virus from the family Reoviridae, non-enveloped, double-stranded segmented RNA genome.","C":"A virus from the family Herpesviridae, enveloped, icosahedral nucleocapsid, double-stranded DNA genome.","D":"A virus from the family Paramyxoviridae, enveloped, helical nucleocapsid, single-stranded negative-sense RNA genome.","E":"A virus from the family Filoviridae, enveloped, filamentous nucleocapsid, single-stranded negative-sense RNA genome."},"choices":[],"video_id":"Basic_Medicine_0","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Which of the following best describes the virus's characteristics in terms of its taxonomic family, genome type, and morphology?\nA. A virus from the family Flaviviridae, enveloped, icosahedral nucleocapsid, single-stranded positive-sense RNA genome.\nB. A virus from the family Reoviridae, non-enveloped, double-stranded segmented RNA genome.\nC. A virus from the family Herpesviridae, enveloped, icosahedral nucleocapsid, double-stranded DNA genome.\nD. A virus from the family Paramyxoviridae, enveloped, helical nucleocapsid, single-stranded negative-sense RNA genome.\nE. A virus from the family Filoviridae, enveloped, filamentous nucleocapsid, single-stranded negative-sense RNA genome.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_845","media":["validation_845_0.mp4"],"messages":[{"role":"user","question":"the fabric that remained mostly intact without melting or burning when exposed to the blowtorch is ____ .","answer":"basalt fiber","hint":"","options":{},"choices":[],"video_id":"Materials_Science_12","question_type":"open-ended","subject":"Materials Science","prompt":"<video>the fabric that remained mostly intact without melting or burning when exposed to the blowtorch is ____ ."}]},{"id":"validation_846","media":["validation_846_0.mp4"],"messages":[{"role":"user","question":"In the video, the small, red-colored cluster of structures corresponds to the **_______**.","answer":"pituitary gland","hint":"","options":{},"choices":[],"video_id":"Neurobiology_28","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>In the video, the small, red-colored cluster of structures corresponds to the **_______**."}]},{"id":"validation_847","media":["validation_847_0.mp4"],"messages":[{"role":"user","question":"Based on what is in the video, what process is shown in it?","answer":"A","hint":"","options":{"A":"Urine Formation Process","B":"Protein Synthesis Process","C":"Bile Secretion Process","D":"Nerve Impulse Transmission Process","E":"Alveolar Gas Exchange Process"},"choices":[],"video_id":"Biology_10","question_type":"multiple-choice","subject":"Biology","prompt":"<video>Based on what is in the video, what process is shown in it?\nA. Urine Formation Process\nB. Protein Synthesis Process\nC. Bile Secretion Process\nD. Nerve Impulse Transmission Process\nE. Alveolar Gas Exchange Process\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_848","media":["validation_848_0.mp4"],"messages":[{"role":"user","question":"Which of the following interventions would be most effective in preventing new infections?","answer":"D","hint":"","options":{"A":"Spraying insecticide indoors to kill adult mosquitoes","B":"Implementing a vaccination program against the disease","C":"Distributing insect repellent creams for personal use","D":"Providing insecticide-treated bed nets to households","E":"Draining standing water to eliminate mosquito breeding sites"},"choices":[],"video_id":"Preventive_Medicine_11","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following interventions would be most effective in preventing new infections?\nA. Spraying insecticide indoors to kill adult mosquitoes\nB. Implementing a vaccination program against the disease\nC. Distributing insect repellent creams for personal use\nD. Providing insecticide-treated bed nets to households\nE. Draining standing water to eliminate mosquito breeding sites\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_849","media":["validation_849_0.mp4"],"messages":[{"role":"user","question":"In the ballscrew assembly shown, the sliding friction is replaced with ______ friction.","answer":"rolling","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_29","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>In the ballscrew assembly shown, the sliding friction is replaced with ______ friction."}]},{"id":"validation_85","media":["validation_85_0.mp4"],"messages":[{"role":"user","question":"According to the video, which distribution does the spectrum gradually obey?","answer":"A","hint":"","options":{"A":"Gaussian","B":"Uniform","C":"Periodical","D":"Lorentzian","E":"Poisson"},"choices":[],"video_id":"Electronics_and_Communication_1","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>According to the video, which distribution does the spectrum gradually obey?\nA. Gaussian\nB. Uniform\nC. Periodical\nD. Lorentzian\nE. Poisson\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_850","media":["validation_850_0.mp4"],"messages":[{"role":"user","question":"Why did water spray out of the toy man's body at the end?","answer":"E","hint":"","options":{"A":"Pour hot water on the toy man, the toy man will expand due to the heat and the water will flow out.","B":"Pour cold water on the toy man, the air pressure inside the toy man will decrease and the water will flow out.","C":"Pour cold water on the toy man and the liquid inside the toy man will decrease in volume and flow out.","D":"Pour water on the toy man, the air pressure around the toy man will decrease and the water will flow out.","E":"Pour hot water on the toy man, the air pressure inside the toy man will increase and water will flow out."},"choices":[],"video_id":"Thermodynamics_12","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Why did water spray out of the toy man's body at the end?\nA. Pour hot water on the toy man, the toy man will expand due to the heat and the water will flow out.\nB. Pour cold water on the toy man, the air pressure inside the toy man will decrease and the water will flow out.\nC. Pour cold water on the toy man and the liquid inside the toy man will decrease in volume and flow out.\nD. Pour water on the toy man, the air pressure around the toy man will decrease and the water will flow out.\nE. Pour hot water on the toy man, the air pressure inside the toy man will increase and water will flow out.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_851","media":["validation_851_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the experiment?","answer":"B","hint":"","options":{"A":"The hot water causes the material of the toy man to expand, squeezing internal water out through openings.","B":"Cooling the toy man in cold water causes the air inside to contract and draw water in; heating it with hot water then causes the air to expand, forcing the water out.","C":"The cold water causes the toy man's material to crack, allowing water in; pouring hot water then causes the cracks to seal, forcing water out.","D":"The toy man absorbs water through its material in cold water; the hot water causes the absorbed water to be released.","E":"Heating the toy man with hot water causes the internal air pressure to decrease, sucking water out of the toy man."},"choices":[],"video_id":"Thermodynamics_12","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following best explains the experiment?\nA. The hot water causes the material of the toy man to expand, squeezing internal water out through openings.\nB. Cooling the toy man in cold water causes the air inside to contract and draw water in; heating it with hot water then causes the air to expand, forcing the water out.\nC. The cold water causes the toy man's material to crack, allowing water in; pouring hot water then causes the cracks to seal, forcing water out.\nD. The toy man absorbs water through its material in cold water; the hot water causes the absorbed water to be released.\nE. Heating the toy man with hot water causes the internal air pressure to decrease, sucking water out of the toy man.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_852","media":["validation_852_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the phenomenon on the beaker in the video?","answer":"D","hint":"","options":{"A":"The internal air pressure increases to about 1.05 atm due to thermal expansion; this pressure increase forces warm air out of the object, cooling the surrounding air and causing condensation on the beaker.","B":"The internal air pressure decreases to about 0.90 atm due to thermal contraction; this pressure drop causes air to flow into the object, warming the surrounding air and preventing condensation on the beaker.","C":"The internal air pressure remains at 1 atm because the temperature change is insufficient to affect the pressure significantly; condensation occurs due to humidity changes in the room.","D":"The internal air pressure decreases to about 0.94 atm due to thermal contraction; the pressure difference draws moist ambient air toward the cold surface of the beaker, where it cools below the dew point and condenses.","E":"The internal air pressure decreases slightly, but the condensation is primarily due to evaporation of the cold water cooling the beaker surface below the ambient dew point."},"choices":[],"video_id":"Thermodynamics_12","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following best explains the phenomenon on the beaker in the video?\nA. The internal air pressure increases to about 1.05 atm due to thermal expansion; this pressure increase forces warm air out of the object, cooling the surrounding air and causing condensation on the beaker.\nB. The internal air pressure decreases to about 0.90 atm due to thermal contraction; this pressure drop causes air to flow into the object, warming the surrounding air and preventing condensation on the beaker.\nC. The internal air pressure remains at 1 atm because the temperature change is insufficient to affect the pressure significantly; condensation occurs due to humidity changes in the room.\nD. The internal air pressure decreases to about 0.94 atm due to thermal contraction; the pressure difference draws moist ambient air toward the cold surface of the beaker, where it cools below the dew point and condenses.\nE. The internal air pressure decreases slightly, but the condensation is primarily due to evaporation of the cold water cooling the beaker surface below the ambient dew point.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_853","media":["validation_853_0.mp4"],"messages":[{"role":"user","question":"n the process shown in the video, what molecules stimulate cell devision?","answer":"B","hint":"","options":{"A":"Collagen Type I","B":"TGF-beta","C":"Osteocalcin","D":"Matrix metalloproteinases (MMPs)","E":"Beta-actin"},"choices":[],"video_id":"Basic_Medicine_24","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>n the process shown in the video, what molecules stimulate cell devision?\nA. Collagen Type I\nB. TGF-beta\nC. Osteocalcin\nD. Matrix metalloproteinases (MMPs)\nE. Beta-actin\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_854","media":["validation_854_0.mp4"],"messages":[{"role":"user","question":"Which of the following factors does not directly affect the variables shown in the video? ","answer":"C","hint":"","options":{"A":"The friction between the object and the surface","B":"The shape and size of the object","C":"The density of the object","D":"The mass of the object","E":"The position of the axis of rotation"},"choices":[],"video_id":"Mechanics_30","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which of the following factors does not directly affect the variables shown in the video? \nA. The friction between the object and the surface\nB. The shape and size of the object\nC. The density of the object\nD. The mass of the object\nE. The position of the axis of rotation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_855","media":["validation_855_0.mp4"],"messages":[{"role":"user","question":"The person is determining the map's ________.","answer":"center of gravity (mass)","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_30","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The person is determining the map's ________."}]},{"id":"validation_856","media":["validation_856_0.mp4"],"messages":[{"role":"user","question":"What is the purpose of the experiment in the video?","answer":"E","hint":"","options":{"A":"Find the center of the circumscribed circle of the object","B":"Measure the area of the object's surface","C":"Determine the volume of the object","D":"Find the center of the inscribed circle of the object","E":"Find the center of gravity of the object"},"choices":[],"video_id":"Mechanical_Engineering_30","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>What is the purpose of the experiment in the video?\nA. Find the center of the circumscribed circle of the object\nB. Measure the area of the object's surface\nC. Determine the volume of the object\nD. Find the center of the inscribed circle of the object\nE. Find the center of gravity of the object\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_857","media":["validation_857_0.mp4"],"messages":[{"role":"user","question":"Which mechanical engineering principle is being applied in this experiment?","answer":"E","hint":"","options":{"A":"The principle that the centroid of a shape is at the intersection point of its axes of symmetry.","B":"The application of the Pythagorean theorem to determine distances.","C":"The use of torque equilibrium to balance moments about a pivot point.","D":"The concept that uniform objects have their center of mass at their geometric center.","E":"The principle that the center of gravity lies along the intersection of plumb lines from multiple suspension points."},"choices":[],"video_id":"Mechanical_Engineering_30","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which mechanical engineering principle is being applied in this experiment?\nA. The principle that the centroid of a shape is at the intersection point of its axes of symmetry.\nB. The application of the Pythagorean theorem to determine distances.\nC. The use of torque equilibrium to balance moments about a pivot point.\nD. The concept that uniform objects have their center of mass at their geometric center.\nE. The principle that the center of gravity lies along the intersection of plumb lines from multiple suspension points.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_858","media":["validation_858_0.mp4"],"messages":[{"role":"user","question":"Inthe video, the procedure indicates that the woman is allergic to **_______**.","answer":"Penicillin","hint":"","options":{},"choices":[],"video_id":"Pharmacy_26","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>Inthe video, the procedure indicates that the woman is allergic to **_______**."}]},{"id":"validation_859","media":["validation_859_0.mp4"],"messages":[{"role":"user","question":"What is shown in the video?","answer":"D","hint":"","options":{"A":"Patch Test","B":"Intravenous Injection","C":"Intradermal Test","D":"Skin Prick Test","E":"ImmunoCAP"},"choices":[],"video_id":"Pharmacy_26","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>What is shown in the video?\nA. Patch Test\nB. Intravenous Injection\nC. Intradermal Test\nD. Skin Prick Test\nE. ImmunoCAP\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_86","media":["validation_86_0.mp4"],"messages":[{"role":"user","question":" Considering the characteristics of various types of electrical noise, which type of noise is most likely the primary contributor to the fluctuations observed in the voltage measurements?","answer":"C","hint":"","options":{"A":"Shot Noise","B":"Flicker Noise (1/f Noise)","C":"Thermal Noise (Johnson-Nyquist Noise)","D":"Burst Noise","E":"Avalanche Noise"},"choices":[],"video_id":"Electronics_and_Communication_1","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video> Considering the characteristics of various types of electrical noise, which type of noise is most likely the primary contributor to the fluctuations observed in the voltage measurements?\nA. Shot Noise\nB. Flicker Noise (1/f Noise)\nC. Thermal Noise (Johnson-Nyquist Noise)\nD. Burst Noise\nE. Avalanche Noise\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_860","media":["validation_860_0.mp4"],"messages":[{"role":"user","question":"What are the physical properties of rope?","answer":"C","hint":"","options":{"A":"Rope has a lower melting point.","B":"Rope is not conductive.","C":"The rope has good electrical conductivity and shrinks when heated and expands when cooled.","D":"The rope has good electrical conductivity and expands with heat and shrinks with cold.","E":"The rope has poor electrical conductivity and expands with heat and shrinks with cold."},"choices":[],"video_id":"Thermodynamics_13","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>What are the physical properties of rope?\nA. Rope has a lower melting point.\nB. Rope is not conductive.\nC. The rope has good electrical conductivity and shrinks when heated and expands when cooled.\nD. The rope has good electrical conductivity and expands with heat and shrinks with cold.\nE. The rope has poor electrical conductivity and expands with heat and shrinks with cold.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_861","media":["validation_861_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the metal block's behavior when the power is switched off?","answer":"C","hint":"","options":{"A":"The magnetic field generated by the current disappears, causing the metal block to fall due to gravity.","B":"The metal block loses its electric charge upon cooling, eliminating electrostatic forces that held it up.","C":"The wire expands upon cooling, increasing in length and allowing the metal block to descend.","D":"The air around the cap cools, reducing buoyant forces and causing the metal block to fall.","E":"The resistance of the wire increases upon cooling, stopping current flow and causing the metal block to fall."},"choices":[],"video_id":"Thermodynamics_13","question_type":"multiple-choice","subject":"Thermodynamics","prompt":"<video>Which of the following best explains the metal block's behavior when the power is switched off?\nA. The magnetic field generated by the current disappears, causing the metal block to fall due to gravity.\nB. The metal block loses its electric charge upon cooling, eliminating electrostatic forces that held it up.\nC. The wire expands upon cooling, increasing in length and allowing the metal block to descend.\nD. The air around the cap cools, reducing buoyant forces and causing the metal block to fall.\nE. The resistance of the wire increases upon cooling, stopping current flow and causing the metal block to fall.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_862","media":["validation_862_0.mp4"],"messages":[{"role":"user","question":"Based on the man's actions in the video, the managerial function he is primarily performing is known as **________**.","answer":"controlling","hint":"","options":{},"choices":[],"video_id":"Management_14","question_type":"open-ended","subject":"Management","prompt":"<video>Based on the man's actions in the video, the managerial function he is primarily performing is known as **________**."}]},{"id":"validation_863","media":["validation_863_0.mp4"],"messages":[{"role":"user","question":"Which move motion in the video has larger change in impulse?","answer":"C","hint":"","options":{"A":"The first move motion has a larger change in impulse","B":"The second move motion has a larger change in impulse","C":"Both move motions have the same change in impulse","D":"Neither move motion has a significant change in impulse","E":"Unable to determine from the video"},"choices":[],"video_id":"Mechanics_31","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Which move motion in the video has larger change in impulse?\nA. The first move motion has a larger change in impulse\nB. The second move motion has a larger change in impulse\nC. Both move motions have the same change in impulse\nD. Neither move motion has a significant change in impulse\nE. Unable to determine from the video\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_864","media":["validation_864_0.mp4"],"messages":[{"role":"user","question":"Based on the video, which of the following statements is true?","answer":"A","hint":"","options":{"A":"The foam pad exhibits hysteresis due to internal friction during compression and expansion cycles, dissipating energy as heat.","B":"The foam pad behaves as a perfectly elastic material, fully recovering its original shape after each compression without any energy loss.","C":"The permanent indentation in the foam pad indicates that it has undergone purely plastic deformation from the initial compression, with no elastic recovery.","D":"Repeated compressions cause the foam pad's stiffness to increase due to strain hardening, making it deform less under the same load over time.","E":"The foam pad absorbs the brick's potential energy entirely as elastic potential energy during compression, storing it without transforming it into other forms of energy."},"choices":[],"video_id":"Mechanics_31","question_type":"multiple-choice","subject":"Mechanics","prompt":"<video>Based on the video, which of the following statements is true?\nA. The foam pad exhibits hysteresis due to internal friction during compression and expansion cycles, dissipating energy as heat.\nB. The foam pad behaves as a perfectly elastic material, fully recovering its original shape after each compression without any energy loss.\nC. The permanent indentation in the foam pad indicates that it has undergone purely plastic deformation from the initial compression, with no elastic recovery.\nD. Repeated compressions cause the foam pad's stiffness to increase due to strain hardening, making it deform less under the same load over time.\nE. The foam pad absorbs the brick's potential energy entirely as elastic potential energy during compression, storing it without transforming it into other forms of energy.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_865","media":["validation_865_0.mp4"],"messages":[{"role":"user","question":"Which movement of wave in the video is related to the quamtum mechanics?","answer":"C","hint":"","options":{"A":"Only the wave with lower amplitude","B":"Neither","C":"Second one","D":"Both","E":"First one"},"choices":[],"video_id":"Modern_Physics_16","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Which movement of wave in the video is related to the quamtum mechanics?\nA. Only the wave with lower amplitude\nB. Neither\nC. Second one\nD. Both\nE. First one\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_866","media":["validation_866_0.mp4"],"messages":[{"role":"user","question":"To prevent the phenomenon shown in the video, a camera with a traditional **_______** shutter should be used.","answer":"mechanical","hint":"","options":{},"choices":[],"video_id":"Art_13","question_type":"open-ended","subject":"Art","prompt":"<video>To prevent the phenomenon shown in the video, a camera with a traditional **_______** shutter should be used."}]},{"id":"validation_867","media":["validation_867_0.mp4"],"messages":[{"role":"user","question":"Through the examination in the video, you can determine which part of the disease?","answer":"D","hint":"","options":{"A":"Pulmonary valve","B":"Aortic valve","C":"Tricuspid valve","D":"Mitral valve","E":"Right atrial appendage"},"choices":[],"video_id":"Clinical_Medicine_30","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Through the examination in the video, you can determine which part of the disease?\nA. Pulmonary valve\nB. Aortic valve\nC. Tricuspid valve\nD. Mitral valve\nE. Right atrial appendage\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_868","media":["validation_868_0.mp4"],"messages":[{"role":"user","question":"Based on the video, the yellow liquid is known as **_____**.","answer":"Yeast Extract Peptone Dextrose (YPD)","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_22","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>Based on the video, the yellow liquid is known as **_____**."}]},{"id":"validation_869","media":["validation_869_0.mp4"],"messages":[{"role":"user","question":"During the changes in the signal generator and oscilloscope shown in the video, the peak level on the signal analyzer will decrease by _____ dB.","answer":"0","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_22","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>During the changes in the signal generator and oscilloscope shown in the video, the peak level on the signal analyzer will decrease by _____ dB."}]},{"id":"validation_87","media":["validation_87_0.mp4"],"messages":[{"role":"user","question":"According to the video, which of the following best explains the observed decrease in the percentage of readings within that bin?","answer":"E","hint":"","options":{"A":"The variance of the voltage readings has increased, causing the distribution to spread out.","B":"The mean voltage has shifted away from the bin's voltage range.","C":"The voltage readings are becoming more uniformly distributed over time.","D":"The measurement noise is decreasing, narrowing the distribution around the mean.","E":"The width of each bin decreases, resulting in a smaller percentage of readings in any single bin within a continuous normal distribution."},"choices":[],"video_id":"Electronics_and_Communication_1","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>According to the video, which of the following best explains the observed decrease in the percentage of readings within that bin?\nA. The variance of the voltage readings has increased, causing the distribution to spread out.\nB. The mean voltage has shifted away from the bin's voltage range.\nC. The voltage readings are becoming more uniformly distributed over time.\nD. The measurement noise is decreasing, narrowing the distribution around the mean.\nE. The width of each bin decreases, resulting in a smaller percentage of readings in any single bin within a continuous normal distribution.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_870","media":["validation_870_0.mp4"],"messages":[{"role":"user","question":"Which variable of the original signal is changed?","answer":"B","hint":"","options":{"A":"Bandwidth","B":"Frequency","C":"Modulation type","D":"Phase","E":"Amplitude"},"choices":[],"video_id":"Electronics_and_Communication_22","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which variable of the original signal is changed?\nA. Bandwidth\nB. Frequency\nC. Modulation type\nD. Phase\nE. Amplitude\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_871","media":["validation_871_0.mp4"],"messages":[{"role":"user","question":"According to the disease process shown in the animation, which of the following precautions would be most effective in stopping its spread by targeting its intermediate host?","answer":"E","hint":"","options":{"A":"Distributing insecticide-treated bed nets to reduce mosquito bites at night.","B":"Implementing mass deworming programs with albendazole in school-aged children.","C":"Providing access to clean water and promoting hygienic practices to prevent fecal-oral transmission.","D":"Eliminating standing water near human habitation to reduce breeding sites for Anopheles mosquitoes.","E":"Introducing molluscicides to control snail populations in freshwater bodies."},"choices":[],"video_id":"Preventive_Medicine_12","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>According to the disease process shown in the animation, which of the following precautions would be most effective in stopping its spread by targeting its intermediate host?\nA. Distributing insecticide-treated bed nets to reduce mosquito bites at night.\nB. Implementing mass deworming programs with albendazole in school-aged children.\nC. Providing access to clean water and promoting hygienic practices to prevent fecal-oral transmission.\nD. Eliminating standing water near human habitation to reduce breeding sites for Anopheles mosquitoes.\nE. Introducing molluscicides to control snail populations in freshwater bodies.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_872","media":["validation_872_0.mp4"],"messages":[{"role":"user","question":"Which of the following options correctly describes a feature or limitation? ","answer":"C","hint":"","options":{"A":"utilizes Hamming codes for error correction","B":"is suitable for communication environments with high error rates","C":"its matrix can be represented by a Tanner graph","D":"increases the payload of data transmission","E":"is optimal for low-latency applications"},"choices":[],"video_id":"Electronics_and_Communication_23","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which of the following options correctly describes a feature or limitation? \nA. utilizes Hamming codes for error correction\nB. is suitable for communication environments with high error rates\nC. its matrix can be represented by a Tanner graph\nD. increases the payload of data transmission\nE. is optimal for low-latency applications\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_873","media":["validation_873_0.mp4"],"messages":[{"role":"user","question":"Based on the content of the video, if the patient is confirmed to have the disease demonstrated in the video, which medication can be used to alleviate the symptoms?","answer":"D","hint":"","options":{"A":"Atropine","B":"Penicillin","C":"Succinylcholine","D":"Neostigmine","E":"Fluoxetine"},"choices":[],"video_id":"Dentistry_4","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Based on the content of the video, if the patient is confirmed to have the disease demonstrated in the video, which medication can be used to alleviate the symptoms?\nA. Atropine\nB. Penicillin\nC. Succinylcholine\nD. Neostigmine\nE. Fluoxetine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_874","media":["validation_874_0.mp4"],"messages":[{"role":"user","question":"Which of the following medications is most likely contributing to the exacerbation of the symptom?","answer":"E","hint":"","options":{"A":"Ibuprofen","B":"Pyridostigmine","C":"Neostigmine","D":"Edrophonium","E":"Fluoxetine"},"choices":[],"video_id":"Dentistry_4","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which of the following medications is most likely contributing to the exacerbation of the symptom?\nA. Ibuprofen\nB. Pyridostigmine\nC. Neostigmine\nD. Edrophonium\nE. Fluoxetine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_875","media":["validation_875_0.mp4"],"messages":[{"role":"user","question":"In the model constructed in the video, the green balloon represents the **_____**.","answer":"diaphragm","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_25","question_type":"open-ended","subject":"Basic Medicine","prompt":"<video>In the model constructed in the video, the green balloon represents the **_____**."}]},{"id":"validation_876","media":["validation_876_0.mp4"],"messages":[{"role":"user","question":"What is the main function of the model organ shown in the video in the human body?","answer":"A","hint":"","options":{"A":"the exchange of gases between inspired air and blood","B":"Maintain blood circulation in the body","C":"Dispose of the food","D":"Provide motor capacity","E":"Produce hormonal secretions"},"choices":[],"video_id":"Basic_Medicine_25","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>What is the main function of the model organ shown in the video in the human body?\nA. the exchange of gases between inspired air and blood\nB. Maintain blood circulation in the body\nC. Dispose of the food\nD. Provide motor capacity\nE. Produce hormonal secretions\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_877","media":["validation_877_0.mp4"],"messages":[{"role":"user","question":"At the end of the video, the doctor used a specific physical examination technique to examine the patient. This technique is also known as respiratory ____.","answer":"excursion","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_31","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>At the end of the video, the doctor used a specific physical examination technique to examine the patient. This technique is also known as respiratory ____."}]},{"id":"validation_878","media":["validation_878_0.mp4"],"messages":[{"role":"user","question":"Which step of the chest examination is shown in the video?","answer":"C","hint":"","options":{"A":"Palpation","B":"Inspection","C":"Both A and B","D":"Percussion","E":"Auscultation"},"choices":[],"video_id":"Clinical_Medicine_31","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Which step of the chest examination is shown in the video?\nA. Palpation\nB. Inspection\nC. Both A and B\nD. Percussion\nE. Auscultation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_879","media":["validation_879_0.mp4"],"messages":[{"role":"user","question":"In the chest examination demonstrated at the end of the video, the doctor uses a specific method to examine the patient. Which of the following clinical findings is most likely to be detected through this particular examination technique?","answer":"B","hint":"","options":{"A":"Increased tactile fremitus over the lower lobes due to pneumonia","B":"Asymmetrical chest expansion indicating a unilateral pleural effusion","C":"Hyperresonant percussion notes over the right lung due to pneumothorax","D":"Fine inspiratory crackles at the lung bases due to pulmonary fibrosis","E":"A barrel-shaped chest indicating chronic obstructive pulmonary disease"},"choices":[],"video_id":"Clinical_Medicine_31","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>In the chest examination demonstrated at the end of the video, the doctor uses a specific method to examine the patient. Which of the following clinical findings is most likely to be detected through this particular examination technique?\nA. Increased tactile fremitus over the lower lobes due to pneumonia\nB. Asymmetrical chest expansion indicating a unilateral pleural effusion\nC. Hyperresonant percussion notes over the right lung due to pneumothorax\nD. Fine inspiratory crackles at the lung bases due to pulmonary fibrosis\nE. A barrel-shaped chest indicating chronic obstructive pulmonary disease\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_88","media":["validation_88_0.mp4"],"messages":[{"role":"user","question":"In the video, water droplets are used on the composite material surface as a _______.","answer":"couplant","hint":"","options":{},"choices":[],"video_id":"Materials_Science_1","question_type":"open-ended","subject":"Materials Science","prompt":"<video>In the video, water droplets are used on the composite material surface as a _______."}]},{"id":"validation_880","media":["validation_880_0.mp4"],"messages":[{"role":"user","question":"In the biological process described in the video, the brown substance depicted is ______.","answer":"RNA polymerase","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_32","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the biological process described in the video, the brown substance depicted is ______."}]},{"id":"validation_881","media":["validation_881_0.mp4"],"messages":[{"role":"user","question":"Unemployment caused by changes in video, is known as **__________** unemployment.","answer":"structural","hint":"","options":{},"choices":[],"video_id":"Economics_15","question_type":"open-ended","subject":"Economics","prompt":"<video>Unemployment caused by changes in video, is known as **__________** unemployment."}]},{"id":"validation_882","media":["validation_882_0.mp4"],"messages":[{"role":"user","question":"What type of unemployment might be caused by the scenario shown in the video?","answer":"A","hint":"","options":{"A":"Structural unemployment","B":"Cyclic unemployment","C":"Hidden unemployment","D":"Frictional unemployment","E":"Seasonal unemployment"},"choices":[],"video_id":"Economics_15","question_type":"multiple-choice","subject":"Economics","prompt":"<video>What type of unemployment might be caused by the scenario shown in the video?\nA. Structural unemployment\nB. Cyclic unemployment\nC. Hidden unemployment\nD. Frictional unemployment\nE. Seasonal unemployment\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_883","media":["validation_883_0.mp4"],"messages":[{"role":"user","question":"Watch  letters in the video. Choose the correct one from the following options.","answer":"E","hint":"","options":{"A":"They evolved into the modern letters by completely abandoning the original symbols.","B":"The original system could represent both consonants and vowels effectively.","C":"They influenced English alphabets through direct inheritance.","D":"The Chinese increased the number of consonant symbols in this alphabet system.","E":"The number of these letters limits the expression ability of the system, but simplifies the learning process."},"choices":[],"video_id":"Literature_10","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Watch  letters in the video. Choose the correct one from the following options.\nA. They evolved into the modern letters by completely abandoning the original symbols.\nB. The original system could represent both consonants and vowels effectively.\nC. They influenced English alphabets through direct inheritance.\nD. The Chinese increased the number of consonant symbols in this alphabet system.\nE. The number of these letters limits the expression ability of the system, but simplifies the learning process.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_884","media":["validation_884_0.mp4"],"messages":[{"role":"user","question":"Based on the hieroglyphs depicted in the video, which of the following statements best describes the influence of the hieroglyphs on the evolution of writing systems relevant to literature?","answer":"B","hint":"","options":{"A":"These hieroglyphs, combining phonetic and symbolic elements, did not directly influence the development of alphabetic scripts.","B":"The adaptation of these hieroglyphs into proto-alphabetic scripts paved the way for the Phoenician and Greek alphabets, profoundly impacting literary traditions.","C":"Hieroglyphs influenced Mesopotamian cuneiform scripts through cultural exchange, leading to shared literary themes between civilizations.","D":"The complexity of hieroglyphs led to the creation of simplified scripts like hieratic and demotic, enabling broader literary expression among scribes.","E":"The aesthetic qualities of hieroglyphs inspired artistic motifs in subsequent cultures, affecting literature indirectly through symbolic representation."},"choices":[],"video_id":"Literature_10","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the hieroglyphs depicted in the video, which of the following statements best describes the influence of the hieroglyphs on the evolution of writing systems relevant to literature?\nA. These hieroglyphs, combining phonetic and symbolic elements, did not directly influence the development of alphabetic scripts.\nB. The adaptation of these hieroglyphs into proto-alphabetic scripts paved the way for the Phoenician and Greek alphabets, profoundly impacting literary traditions.\nC. Hieroglyphs influenced Mesopotamian cuneiform scripts through cultural exchange, leading to shared literary themes between civilizations.\nD. The complexity of hieroglyphs led to the creation of simplified scripts like hieratic and demotic, enabling broader literary expression among scribes.\nE. The aesthetic qualities of hieroglyphs inspired artistic motifs in subsequent cultures, affecting literature indirectly through symbolic representation.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_885","media":["validation_885_0.mp4"],"messages":[{"role":"user","question":"Based on the hieroglyphs shown in the video, which of the following statements best explains how the nature of hieroglyphic writing influenced literary expression in its time?","answer":"E","hint":"","options":{"A":"The pictorial nature of hieroglyphs limited their use to monumental inscriptions, preventing their application in extensive literary works.","B":"The sacred status of hieroglyphs restricted their use to religious texts, inhibiting the development of secular literature.","C":"The complexity of hieroglyphic script led to a decline in literacy rates, confining literary production to an elite class of scribes.","D":"The absence of vowels in hieroglyphic writing created ambiguities that hindered the precise expression of literary ideas.","E":"The combination of phonetic and ideographic elements in hieroglyphs facilitated rich layers of meaning, allowing for nuanced literary techniques like puns and metaphors."},"choices":[],"video_id":"Literature_10","question_type":"multiple-choice","subject":"Literature","prompt":"<video>Based on the hieroglyphs shown in the video, which of the following statements best explains how the nature of hieroglyphic writing influenced literary expression in its time?\nA. The pictorial nature of hieroglyphs limited their use to monumental inscriptions, preventing their application in extensive literary works.\nB. The sacred status of hieroglyphs restricted their use to religious texts, inhibiting the development of secular literature.\nC. The complexity of hieroglyphic script led to a decline in literacy rates, confining literary production to an elite class of scribes.\nD. The absence of vowels in hieroglyphic writing created ambiguities that hindered the precise expression of literary ideas.\nE. The combination of phonetic and ideographic elements in hieroglyphs facilitated rich layers of meaning, allowing for nuanced literary techniques like puns and metaphors.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_886","media":["validation_886_0.mp4"],"messages":[{"role":"user","question":"What is the purpose of the operation of the experimental operator in the video?","answer":"B","hint":"","options":{"A":"Irradiation","B":"Sterilization","C":"Depositing","D":"Freeze","E":"Adsorbing"},"choices":[],"video_id":"Biomedical_Engineering_23","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What is the purpose of the operation of the experimental operator in the video?\nA. Irradiation\nB. Sterilization\nC. Depositing\nD. Freeze\nE. Adsorbing\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_887","media":["validation_887_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains why the shown operation is effective?","answer":"C","hint":"","options":{"A":"Because it inactivates prions by denaturing their protein structure.","B":"Because it kills microorganisms by dehydrating their cytoplasm.","C":"Because it destroys bacteria through coagulation of proteins caused by moist heat under pressure.","D":"Because it removes all organic contaminants by oxidizing them at high temperatures.","E":"Because it sterilizes equipment with the appropriate irradiation, high temperature and high pressure."},"choices":[],"video_id":"Biomedical_Engineering_23","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following best explains why the shown operation is effective?\nA. Because it inactivates prions by denaturing their protein structure.\nB. Because it kills microorganisms by dehydrating their cytoplasm.\nC. Because it destroys bacteria through coagulation of proteins caused by moist heat under pressure.\nD. Because it removes all organic contaminants by oxidizing them at high temperatures.\nE. Because it sterilizes equipment with the appropriate irradiation, high temperature and high pressure.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_888","media":["validation_888_0.mp4"],"messages":[{"role":"user","question":"Which of the following diseases' symptoms might be depicted in the video?","answer":"E","hint":"","options":{"A":"Malaria","B":"Dengue Fever","C":"Leptospirosis","D":"Brucellosis","E":"Typhoid Fever"},"choices":[],"video_id":"Preventive_Medicine_13","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following diseases' symptoms might be depicted in the video?\nA. Malaria\nB. Dengue Fever\nC. Leptospirosis\nD. Brucellosis\nE. Typhoid Fever\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_889","media":["validation_889_0.mp4"],"messages":[{"role":"user","question":"Which of the following organisms is most likely responsible for their illness?","answer":"D","hint":"","options":{"A":"Schistosoma mansoni","B":"Hepatitis E virus","C":"Dengue virus","D":"Salmonella typhi","E":"Plasmodium vivax"},"choices":[],"video_id":"Preventive_Medicine_13","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>Which of the following organisms is most likely responsible for their illness?\nA. Schistosoma mansoni\nB. Hepatitis E virus\nC. Dengue virus\nD. Salmonella typhi\nE. Plasmodium vivax\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_89","media":["validation_89_0.mp4"],"messages":[{"role":"user","question":"What is the process shown in the video for manufacturing fiber composite materials?","answer":"automated fiber placement","hint":"","options":{},"choices":[],"video_id":"Materials_Science_2","question_type":"open-ended","subject":"Materials Science","prompt":"<video>What is the process shown in the video for manufacturing fiber composite materials?"}]},{"id":"validation_890","media":["validation_890_0.mp4"],"messages":[{"role":"user","question":"In the video, these electrical devices also waste energy for various reasons during operation. The primary form of energy loss shown in the video is ________ loss.","answer":"ohmic","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_29","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the video, these electrical devices also waste energy for various reasons during operation. The primary form of energy loss shown in the video is ________ loss."}]},{"id":"validation_891","media":["validation_891_0.mp4"],"messages":[{"role":"user","question":"Based on the video, these countries are experiencing an economic **______**.","answer":"Depression","hint":"","options":{},"choices":[],"video_id":"Economics_16","question_type":"open-ended","subject":"Economics","prompt":"<video>Based on the video, these countries are experiencing an economic **______**."}]},{"id":"validation_892","media":["validation_892_0.mp4"],"messages":[{"role":"user","question":"What might be the cause of the scene in the video?","answer":"B","hint":"","options":{"A":"Significant technological changes disrupting traditional industries","B":"Long-term imbalance in government finances and excessive debt burden","C":"Aging population leading to a reduction in the labor force","D":"International sanctions leading to trade disruptions","E":"High levels of inflation causing a cost of living crisis"},"choices":[],"video_id":"Economics_16","question_type":"multiple-choice","subject":"Economics","prompt":"<video>What might be the cause of the scene in the video?\nA. Significant technological changes disrupting traditional industries\nB. Long-term imbalance in government finances and excessive debt burden\nC. Aging population leading to a reduction in the labor force\nD. International sanctions leading to trade disruptions\nE. High levels of inflation causing a cost of living crisis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_893","media":["validation_893_0.mp4"],"messages":[{"role":"user","question":"Based on the different states of the tested object, the signal received by the sensor changes accordingly. In the specific scenario demonstrated in the video, the phenomenon is referred to as the ______ effect.","answer":"Doppler","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_30","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>Based on the different states of the tested object, the signal received by the sensor changes accordingly. In the specific scenario demonstrated in the video, the phenomenon is referred to as the ______ effect."}]},{"id":"validation_894","media":["validation_894_0.mp4"],"messages":[{"role":"user","question":"Based on the experiment and images shown in the video, the machine demonstrated in the video is most likely an ________.","answer":"X-ray diffractometer","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_17","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>Based on the experiment and images shown in the video, the machine demonstrated in the video is most likely an ________."}]},{"id":"validation_895","media":["validation_895_0.mp4"],"messages":[{"role":"user","question":"How does the reflection level changes in the video?","answer":"B","hint":"","options":{"A":"Smaller first, then bigger","B":"Smaller","C":"Cyclically increases and decreases","D":"Bigger first, then smaller","E":"Bigger"},"choices":[],"video_id":"Modern_Physics_17","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>How does the reflection level changes in the video?\nA. Smaller first, then bigger\nB. Smaller\nC. Cyclically increases and decreases\nD. Bigger first, then smaller\nE. Bigger\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_896","media":["validation_896_0.mp4"],"messages":[{"role":"user","question":"Based on the description of the apparatus in the video, which scientific instrument is most likely depicted, and used for material analysis in the field of Modern Physics?","answer":"D","hint":"","options":{"A":"Scanning Tunneling Microscope (STM)","B":"Nuclear Magnetic Resonance (NMR) Spectrometer","C":"Rutherford Backscattering Spectrometer (RBS)","D":"X-ray Diffractometer (XRD)","E":"Atomic Force Microscope (AFM)"},"choices":[],"video_id":"Modern_Physics_17","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>Based on the description of the apparatus in the video, which scientific instrument is most likely depicted, and used for material analysis in the field of Modern Physics?\nA. Scanning Tunneling Microscope (STM)\nB. Nuclear Magnetic Resonance (NMR) Spectrometer\nC. Rutherford Backscattering Spectrometer (RBS)\nD. X-ray Diffractometer (XRD)\nE. Atomic Force Microscope (AFM)\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_897","media":["validation_897_0.mp4"],"messages":[{"role":"user","question":"In a polarized electrical plug, as shown in the video, the left prong corresponds to the _____ conductor.","answer":"neutral","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_31","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In a polarized electrical plug, as shown in the video, the left prong corresponds to the _____ conductor."}]},{"id":"validation_898","media":["validation_898_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about the plug in the video is correct?","answer":"B","hint":"","options":{"A":"There are three plugs in the video","B":"Changing the direction of the plug may not necessarily allow it to be inserted into the socket","C":"There are four plugs in the video","D":"The plug can be inserted into the socket in both directions","E":"The plug must be inserted at a specific angle to work"},"choices":[],"video_id":"Electrical_Engineering_31","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>Which of the following statements about the plug in the video is correct?\nA. There are three plugs in the video\nB. Changing the direction of the plug may not necessarily allow it to be inserted into the socket\nC. There are four plugs in the video\nD. The plug can be inserted into the socket in both directions\nE. The plug must be inserted at a specific angle to work\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_899","media":["validation_899_0.mp4"],"messages":[{"role":"user","question":"What is the purpose of this design?","answer":"E","hint":"","options":{"A":"Because it allows the plug to be inserted more easily in low-light conditions, improving user convenience.","B":"Because it ensures that the plug only fits into specially designed outlets, preventing use with incompatible electrical systems.","C":"Because it is intended to prevent children from inserting objects into outlets, enhancing child safety.","D":"Because it indicates that the plug is intended for use with three-phase power systems commonly found in industrial settings, which has higher efficiency and higher power density.","E":"Because it ensures that the plug can only be inserted in one orientation, maintaining correct hot and neutral connections to prevent potential shock hazards."},"choices":[],"video_id":"Electrical_Engineering_31","question_type":"multiple-choice","subject":"Electrical Engineering","prompt":"<video>What is the purpose of this design?\nA. Because it allows the plug to be inserted more easily in low-light conditions, improving user convenience.\nB. Because it ensures that the plug only fits into specially designed outlets, preventing use with incompatible electrical systems.\nC. Because it is intended to prevent children from inserting objects into outlets, enhancing child safety.\nD. Because it indicates that the plug is intended for use with three-phase power systems commonly found in industrial settings, which has higher efficiency and higher power density.\nE. Because it ensures that the plug can only be inserted in one orientation, maintaining correct hot and neutral connections to prevent potential shock hazards.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_9","media":["validation_9_0.mp4"],"messages":[{"role":"user","question":"What process is shown in the video?","answer":"Embryo Transfer","hint":"","options":{},"choices":[],"video_id":"Pharmacy_0","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>What process is shown in the video?"}]},{"id":"validation_90","media":["validation_90_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements is not true about automated manufacturing techniques for carbon fiber tows?","answer":"D","hint":"","options":{"A":"The laid carbon fiber bundles are approximately homogeneous","B":"Automated systems can detect defects in real time","C":"The two laying processes take approximately the same amount of time.","D":"Even speed at all times during production","E":"Direction can be changed"},"choices":[],"video_id":"Materials_Science_2","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Which of the following statements is not true about automated manufacturing techniques for carbon fiber tows?\nA. The laid carbon fiber bundles are approximately homogeneous\nB. Automated systems can detect defects in real time\nC. The two laying processes take approximately the same amount of time.\nD. Even speed at all times during production\nE. Direction can be changed\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_900","media":["validation_900_0.mp4"],"messages":[{"role":"user","question":"The demonstrated problem is an example of _________.","answer":"Traveling Salesman Problem (TSP)","hint":"","options":{},"choices":[],"video_id":"Computer_Science_44","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The demonstrated problem is an example of _________."}]},{"id":"validation_901","media":["validation_901_0.mp4"],"messages":[{"role":"user","question":"Based on the video content, determine what drugs are available to treat this disease.","answer":"D","hint":"","options":{"A":"Ampicillin","B":"Amoxicillin","C":"Ribavirin","D":"Emtricitabine","E":"Fluconazole"},"choices":[],"video_id":"Pharmacy_27","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Based on the video content, determine what drugs are available to treat this disease.\nA. Ampicillin\nB. Amoxicillin\nC. Ribavirin\nD. Emtricitabine\nE. Fluconazole\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_902","media":["validation_902_0.mp4"],"messages":[{"role":"user","question":"In the video, the circuit acts as a _____, responding primarily to sounds at its resonant frequency.","answer":"band-pass filter","hint":"","options":{},"choices":[],"video_id":"Electrical_Engineering_32","question_type":"open-ended","subject":"Electrical Engineering","prompt":"<video>In the video, the circuit acts as a _____, responding primarily to sounds at its resonant frequency."}]},{"id":"validation_903","media":["validation_903_0.mp4"],"messages":[{"role":"user","question":"In the diagnostic preparation demonstrated in the video, considering the equipment being used, it is crucial to operate at an angle of approximately ___ degrees.","answer":"30","hint":"","options":{},"choices":[],"video_id":"Preventive_Medicine_14","question_type":"open-ended","subject":"Preventive Medicine","prompt":"<video>In the diagnostic preparation demonstrated in the video, considering the equipment being used, it is crucial to operate at an angle of approximately ___ degrees."}]},{"id":"validation_904","media":["validation_904_0.mp4"],"messages":[{"role":"user","question":"In the laboratory technique demonstrated in the video, which of the following is the most likely diagnosis?","answer":"C","hint":"","options":{"A":"Chronic Lymphocytic Leukemia (CLL)","B":"Acute Lymphoblastic Leukemia (ALL)","C":"Acute Myeloid Leukemia (AML)","D":"Hairy Cell Leukemia","E":"Multiple Myeloma"},"choices":[],"video_id":"Preventive_Medicine_14","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>In the laboratory technique demonstrated in the video, which of the following is the most likely diagnosis?\nA. Chronic Lymphocytic Leukemia (CLL)\nB. Acute Lymphoblastic Leukemia (ALL)\nC. Acute Myeloid Leukemia (AML)\nD. Hairy Cell Leukemia\nE. Multiple Myeloma\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_905","media":["validation_905_0.mp4"],"messages":[{"role":"user","question":"The examination method shown in the video is likely used to diagnose which of the following diseases?","answer":"A","hint":"","options":{"A":"Malaria","B":"COVID-19","C":"Mumps","D":"Measles","E":"Influenza"},"choices":[],"video_id":"Preventive_Medicine_14","question_type":"multiple-choice","subject":"Preventive Medicine","prompt":"<video>The examination method shown in the video is likely used to diagnose which of the following diseases?\nA. Malaria\nB. COVID-19\nC. Mumps\nD. Measles\nE. Influenza\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_906","media":["validation_906_0.mp4"],"messages":[{"role":"user","question":"In the video, over time, the lines extending across the screen are referred to as _____ cracks.","answer":"fatigue","hint":"","options":{},"choices":[],"video_id":"Materials_Science_13","question_type":"open-ended","subject":"Materials Science","prompt":"<video>In the video, over time, the lines extending across the screen are referred to as _____ cracks."}]},{"id":"validation_907","media":["validation_907_0.mp4"],"messages":[{"role":"user","question":"Which of the following statements about bolting experiments is false?","answer":"E","hint":"","options":{"A":"The bolts are subjected to axial pressure","B":"Fatigue cracks occur in plates","C":"The two plates are connected by a bolt","D":"The main force in the stretching process is the plates","E":"The main force during stretching is the bolt"},"choices":[],"video_id":"Materials_Science_13","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Which of the following statements about bolting experiments is false?\nA. The bolts are subjected to axial pressure\nB. Fatigue cracks occur in plates\nC. The two plates are connected by a bolt\nD. The main force in the stretching process is the plates\nE. The main force during stretching is the bolt\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_908","media":["validation_908_0.mp4"],"messages":[{"role":"user","question":"The device that is being operated uses a **_______** (which kind of) control system.","answer":"closed-loop","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_31","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The device that is being operated uses a **_______** (which kind of) control system."}]},{"id":"validation_909","media":["validation_909_0.mp4"],"messages":[{"role":"user","question":"Assuming the voltage output of the photodiode is proportional to the light intensity, the polarization angle θ when the voltage reading is 1.865 V is approximately ___ degrees.","answer":"11 degrees","hint":"","options":{},"choices":[],"video_id":"Modern_Physics_18","question_type":"open-ended","subject":"Modern Physics","prompt":"<video>Assuming the voltage output of the photodiode is proportional to the light intensity, the polarization angle θ when the voltage reading is 1.865 V is approximately ___ degrees."}]},{"id":"validation_91","media":["validation_91_0.mp4"],"messages":[{"role":"user","question":"Considering advanced composite manufacturing techniques and the challenges associated with producing high-performance carbon fiber composites, which of the following is the primary advantage of using technology shown in the video in this context?","answer":"D","hint":"","options":{"A":"It allows for precise control over the degree of polymerization of the resin matrix.","B":"It mitigates thermal stresses by evenly distributing heat during the curing process.","C":"It enhances the intrinsic strength of individual carbon fibers through proper tensioning.","D":"It ensures accurate fiber orientation and placement, reducing defects such as gaps and overlaps, thus improving structural performance.","E":"It enables real-time monitoring of chemical reactions within the resin to adjust processing parameters accordingly."},"choices":[],"video_id":"Materials_Science_2","question_type":"multiple-choice","subject":"Materials Science","prompt":"<video>Considering advanced composite manufacturing techniques and the challenges associated with producing high-performance carbon fiber composites, which of the following is the primary advantage of using technology shown in the video in this context?\nA. It allows for precise control over the degree of polymerization of the resin matrix.\nB. It mitigates thermal stresses by evenly distributing heat during the curing process.\nC. It enhances the intrinsic strength of individual carbon fibers through proper tensioning.\nD. It ensures accurate fiber orientation and placement, reducing defects such as gaps and overlaps, thus improving structural performance.\nE. It enables real-time monitoring of chemical reactions within the resin to adjust processing parameters accordingly.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_910","media":["validation_910_0.mp4"],"messages":[{"role":"user","question":"When the operator rotates the knot, how does the intensity of the polarized wave changes?","answer":"C","hint":"","options":{"A":"Oscillates","B":"Smaller","C":"Bigger first, then smaller","D":"Smaller first, then bigger","E":"Bigger"},"choices":[],"video_id":"Modern_Physics_18","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>When the operator rotates the knot, how does the intensity of the polarized wave changes?\nA. Oscillates\nB. Smaller\nC. Bigger first, then smaller\nD. Smaller first, then bigger\nE. Bigger\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_911","media":["validation_911_0.mp4"],"messages":[{"role":"user","question":"In the experiment described in the video, a photodiode is used to record the intensity of light. Between the two readings, how much did the number of photons reaching the photodiode change?","answer":"A","hint":"","options":{"A":"3.86%","B":"-3.86%","C":"3.72%","D":"-3.72%","E":"3.76%"},"choices":[],"video_id":"Modern_Physics_18","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>In the experiment described in the video, a photodiode is used to record the intensity of light. Between the two readings, how much did the number of photons reaching the photodiode change?\nA. 3.86%\nB. -3.86%\nC. 3.72%\nD. -3.72%\nE. 3.76%\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_912","media":["validation_912_0.mp4"],"messages":[{"role":"user","question":"Which of the following local anaesthetics should be avoided in the patient shown in the video because of the risk of prolonged effects and toxicity?","answer":"A","hint":"","options":{"A":"Procaine","B":"Lidocaine","C":"Mepivacaine","D":"Articaine","E":"Bupivacaine"},"choices":[],"video_id":"Pharmacy_28","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following local anaesthetics should be avoided in the patient shown in the video because of the risk of prolonged effects and toxicity?\nA. Procaine\nB. Lidocaine\nC. Mepivacaine\nD. Articaine\nE. Bupivacaine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_913","media":["validation_913_0.mp4"],"messages":[{"role":"user","question":"Which star system is shown in the video? ","answer":"C","hint":"","options":{"A":"K2-138 System","B":"TRAPPIST System","C":"Solar System","D":"Mu Arae System","E":"Rho1 Cancri System"},"choices":[],"video_id":"Astronomy_3","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which star system is shown in the video? \nA. K2-138 System\nB. TRAPPIST System\nC. Solar System\nD. Mu Arae System\nE. Rho1 Cancri System\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_914","media":["validation_914_0.mp4"],"messages":[{"role":"user","question":"The red squares most likely represent **______** in the demonstrated data structure in the video.","answer":"collisions","hint":"","options":{},"choices":[],"video_id":"Computer_Science_45","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The red squares most likely represent **______** in the demonstrated data structure in the video."}]},{"id":"validation_915","media":["validation_915_0.mp4"],"messages":[{"role":"user","question":"What kind of data structure is used in this video?","answer":"C","hint":"","options":{"A":"splay tree","B":"linked list","C":"hash table","D":"AVL tree","E":"red-black tree"},"choices":[],"video_id":"Computer_Science_45","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What kind of data structure is used in this video?\nA. splay tree\nB. linked list\nC. hash table\nD. AVL tree\nE. red-black tree\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_916","media":["validation_916_0.mp4"],"messages":[{"role":"user","question":"Considering that red squares represent collision events or special handling during insertions, which collision resolution strategy in hashing is most likely being illustrated in the video?","answer":"E","hint":"","options":{"A":"Separate Chaining using Linked Lists","B":"Open Addressing with Linear Probing","C":"Open Addressing with Quadratic Probing","D":"Cuckoo Hashing","E":"Open Addressing with Double Hashing"},"choices":[],"video_id":"Computer_Science_45","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>Considering that red squares represent collision events or special handling during insertions, which collision resolution strategy in hashing is most likely being illustrated in the video?\nA. Separate Chaining using Linked Lists\nB. Open Addressing with Linear Probing\nC. Open Addressing with Quadratic Probing\nD. Cuckoo Hashing\nE. Open Addressing with Double Hashing\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_917","media":["validation_917_0.mp4"],"messages":[{"role":"user","question":"The content depicted in this simple animation carries a ______ tone.","answer":"realistic","hint":"","options":{},"choices":[],"video_id":"Literature_11","question_type":"open-ended","subject":"Literature","prompt":"<video>The content depicted in this simple animation carries a ______ tone."}]},{"id":"validation_918","media":["validation_918_0.mp4"],"messages":[{"role":"user","question":"What kind of biological technology is reflected in the video?","answer":"B","hint":"","options":{"A":"Inactivation of genetic material","B":"DNA probe hybridization","C":"DNA frameshift mutation","D":"Protein denaturation","E":"RNA coding"},"choices":[],"video_id":"Biomedical_Engineering_24","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of biological technology is reflected in the video?\nA. Inactivation of genetic material\nB. DNA probe hybridization\nC. DNA frameshift mutation\nD. Protein denaturation\nE. RNA coding\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_919","media":["validation_919_0.mp4"],"messages":[{"role":"user","question":"Which of the following medications would most effectively achieve this effect in video?","answer":"C","hint":"","options":{"A":"Clomiphene Citrate","B":"Progesterone","C":"Estradiol","D":"Human Chorionic Gonadotropin (hCG)","E":"GnRH Antagonist"},"choices":[],"video_id":"Pharmacy_29","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>Which of the following medications would most effectively achieve this effect in video?\nA. Clomiphene Citrate\nB. Progesterone\nC. Estradiol\nD. Human Chorionic Gonadotropin (hCG)\nE. GnRH Antagonist\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_92","media":["validation_92_0.mp4"],"messages":[{"role":"user","question":"The formula mass of the white powder added to the beaker is **________** grams per mole.","answer":"84 g/mol","hint":"","options":{},"choices":[],"video_id":"Chemistry_2","question_type":"open-ended","subject":"Chemistry","prompt":"<video>The formula mass of the white powder added to the beaker is **________** grams per mole."}]},{"id":"validation_920","media":["validation_920_0.mp4"],"messages":[{"role":"user","question":"what kind of effect is showed in the video?","answer":"A","hint":"","options":{"A":"Coriolis effect","B":"Butterfly effect","C":"Greenhouse effect","D":"Doppler effect","E":"Lever effect"},"choices":[],"video_id":"Geography_14","question_type":"multiple-choice","subject":"Geography","prompt":"<video>what kind of effect is showed in the video?\nA. Coriolis effect\nB. Butterfly effect\nC. Greenhouse effect\nD. Doppler effect\nE. Lever effect\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_921","media":["validation_921_0.mp4"],"messages":[{"role":"user","question":"Based on the phenomenon described in the video, which of the following is best explained?","answer":"E","hint":"","options":{"A":"High pressure in the subtropics","B":"Global sea level rise","C":"Intensification of land desertification","D":"Formation of the Himalayas","E":"Formation of trade winds near the equator"},"choices":[],"video_id":"Geography_14","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the phenomenon described in the video, which of the following is best explained?\nA. High pressure in the subtropics\nB. Global sea level rise\nC. Intensification of land desertification\nD. Formation of the Himalayas\nE. Formation of trade winds near the equator\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_922","media":["validation_922_0.mp4"],"messages":[{"role":"user","question":"Based on the demonstration in the video, which of the following best explains Earth's cyclone rotation differences?","answer":"C","hint":"","options":{"A":"Differential heating of Earth's surface causes air to rise at the equator, leading to cyclonic rotation patterns in each hemisphere.","B":"High-pressure systems over the poles push winds toward the equator, initiating opposite rotations in each hemisphere.","C":"The Earth's rotation causes the Coriolis effect, deflecting winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, resulting in opposite cyclone rotation directions.","D":"The trade winds converge near the equator, causing cyclones to spin in opposite directions due to their interactions.","E":"Ocean currents influence the rotation of cyclones, causing them to rotate differently in each hemisphere."},"choices":[],"video_id":"Geography_14","question_type":"multiple-choice","subject":"Geography","prompt":"<video>Based on the demonstration in the video, which of the following best explains Earth's cyclone rotation differences?\nA. Differential heating of Earth's surface causes air to rise at the equator, leading to cyclonic rotation patterns in each hemisphere.\nB. High-pressure systems over the poles push winds toward the equator, initiating opposite rotations in each hemisphere.\nC. The Earth's rotation causes the Coriolis effect, deflecting winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, resulting in opposite cyclone rotation directions.\nD. The trade winds converge near the equator, causing cyclones to spin in opposite directions due to their interactions.\nE. Ocean currents influence the rotation of cyclones, causing them to rotate differently in each hemisphere.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_923","media":["validation_923_0.mp4"],"messages":[{"role":"user","question":"Based on the changes shown in the video, certain kidney structures have undergone alterations, resulting in damage to the kidney’s _____ function.","answer":"filtration","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_33","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>Based on the changes shown in the video, certain kidney structures have undergone alterations, resulting in damage to the kidney’s _____ function."}]},{"id":"validation_924","media":["validation_924_0.mp4"],"messages":[{"role":"user","question":"In the video, the method is primarily based on **____**.","answer":"crystallization","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_25","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the method is primarily based on **____**."}]},{"id":"validation_925","media":["validation_925_0.mp4"],"messages":[{"role":"user","question":"What phenomenon is described in the video?","answer":"C","hint":"","options":{"A":"Solidification","B":"Melting","C":"Crystallization","D":"Vaporization","E":"Sublimation"},"choices":[],"video_id":"Biomedical_Engineering_25","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What phenomenon is described in the video?\nA. Solidification\nB. Melting\nC. Crystallization\nD. Vaporization\nE. Sublimation\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_926","media":["validation_926_0.mp4"],"messages":[{"role":"user","question":"The display of objects in the video description, is considered a(n) ________ to treat.","answer":"invitation to treat","hint":"","options":{},"choices":[],"video_id":"Law_11","question_type":"open-ended","subject":"Law","prompt":"<video>The display of objects in the video description, is considered a(n) ________ to treat."}]},{"id":"validation_927","media":["validation_927_0.mp4"],"messages":[{"role":"user","question":"Given the content of the video, the coffee shop is supporting workplace diversity and complying with the **______ Act**.","answer":"Equality","hint":"","options":{},"choices":[],"video_id":"Management_15","question_type":"open-ended","subject":"Management","prompt":"<video>Given the content of the video, the coffee shop is supporting workplace diversity and complying with the **______ Act**."}]},{"id":"validation_928","media":["validation_928_0.mp4"],"messages":[{"role":"user","question":"What kind of problem does the video try to solve?","answer":"Maximum flow problem","hint":"","options":{},"choices":[],"video_id":"Computer_Science_46","question_type":"open-ended","subject":"Computer Science","prompt":"<video>What kind of problem does the video try to solve?"}]},{"id":"validation_929","media":["validation_929_0.mp4"],"messages":[{"role":"user","question":"In the video, the substance being injected is most likely **_____** .","answer":"hydrogel","hint":"","options":{},"choices":[],"video_id":"Biomedical_Engineering_26","question_type":"open-ended","subject":"Biomedical Engineering","prompt":"<video>In the video, the substance being injected is most likely **_____** ."}]},{"id":"validation_93","media":["validation_93_0.mp4"],"messages":[{"role":"user","question":"What  is the formula mass of the generated gas ?","answer":"E","hint":"","options":{"A":"32g","B":"40g","C":"40amu","D":"30amu","E":"44amu"},"choices":[],"video_id":"Chemistry_2","question_type":"multiple-choice","subject":"Chemistry","prompt":"<video>What  is the formula mass of the generated gas ?\nA. 32g\nB. 40g\nC. 40amu\nD. 30amu\nE. 44amu\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_930","media":["validation_930_0.mp4"],"messages":[{"role":"user","question":"What kind of biomaterial is used in the video?","answer":"D","hint":"","options":{"A":"Self-healing Materials","B":"Bioactive Glass","C":"Metallic Implants","D":"Hydrogels","E":"Bioceramics"},"choices":[],"video_id":"Biomedical_Engineering_26","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>What kind of biomaterial is used in the video?\nA. Self-healing Materials\nB. Bioactive Glass\nC. Metallic Implants\nD. Hydrogels\nE. Bioceramics\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_931","media":["validation_931_0.mp4"],"messages":[{"role":"user","question":"Which of the following is the most significant advantage of using the injected material shown in the video?","answer":"A","hint":"","options":{"A":"They can fill irregular spaces and solidify in situ, providing a customizable fit.","B":"They stimulate bone growth by releasing osteoinductive factors.","C":"They enhance electrical conductivity for improving neural tissue regeneration.","D":"They provide a rigid scaffold suitable for load-bearing applications.","E":"They deliver sustained doses of chemotherapeutic agents to target sites."},"choices":[],"video_id":"Biomedical_Engineering_26","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following is the most significant advantage of using the injected material shown in the video?\nA. They can fill irregular spaces and solidify in situ, providing a customizable fit.\nB. They stimulate bone growth by releasing osteoinductive factors.\nC. They enhance electrical conductivity for improving neural tissue regeneration.\nD. They provide a rigid scaffold suitable for load-bearing applications.\nE. They deliver sustained doses of chemotherapeutic agents to target sites.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_932","media":["validation_932_0.mp4"],"messages":[{"role":"user","question":"Which of the following properties does the injected material in the video have?","answer":"A","hint":"","options":{"A":"The biomaterial is biodegradable and has mechanical properties matching the surrounding soft tissue.","B":"The biomaterial is electrically conductive to stimulate muscle contractions for enhanced tissue repair.","C":"The biomaterial is a non-porous metal that provides long-term structural support.","D":"The biomaterial releases pro-inflammatory cytokines to activate immune responses.","E":"The biomaterial is radio-opaque to allow for imaging during MRI procedures."},"choices":[],"video_id":"Biomedical_Engineering_26","question_type":"multiple-choice","subject":"Biomedical Engineering","prompt":"<video>Which of the following properties does the injected material in the video have?\nA. The biomaterial is biodegradable and has mechanical properties matching the surrounding soft tissue.\nB. The biomaterial is electrically conductive to stimulate muscle contractions for enhanced tissue repair.\nC. The biomaterial is a non-porous metal that provides long-term structural support.\nD. The biomaterial releases pro-inflammatory cytokines to activate immune responses.\nE. The biomaterial is radio-opaque to allow for imaging during MRI procedures.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_933","media":["validation_933_0.mp4"],"messages":[{"role":"user","question":"Based on the content in the video, guess what disease the patient is most likely to suffer from","answer":"A","hint":"","options":{"A":"myasthenia gravis","B":"Corneal Ulcer","C":"Optic Neuritis","D":"glaucoma","E":"iridocyclitis"},"choices":[],"video_id":"Basic_Medicine_26","question_type":"multiple-choice","subject":"Basic Medicine","prompt":"<video>Based on the content in the video, guess what disease the patient is most likely to suffer from\nA. myasthenia gravis\nB. Corneal Ulcer\nC. Optic Neuritis\nD. glaucoma\nE. iridocyclitis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_934","media":["validation_934_0.mp4"],"messages":[{"role":"user","question":"The test is known as the **__________** test.","answer":"Tensilon","hint":"","options":{},"choices":[],"video_id":"Basic_Medicine_26","question_type":"open-ended","subject":"Dentistry","prompt":"<video>The test is known as the **__________** test."}]},{"id":"validation_935","media":["validation_935_0.mp4"],"messages":[{"role":"user","question":"Based on the voltage reading histogram displayed by the multimeter, the voltage readings can be considered a ______ random variable.","answer":"independent","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_24","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>Based on the voltage reading histogram displayed by the multimeter, the voltage readings can be considered a ______ random variable."}]},{"id":"validation_936","media":["validation_936_0.mp4"],"messages":[{"role":"user","question":"When added a noise signal of the same type, what property is to be followed? ","answer":"E","hint":"","options":{"A":"reversibility","B":"linearity","C":"monotonicity","D":"consistency","E":"independency"},"choices":[],"video_id":"Electronics_and_Communication_24","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>When added a noise signal of the same type, what property is to be followed? \nA. reversibility\nB. linearity\nC. monotonicity\nD. consistency\nE. independency\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_937","media":["validation_937_0.mp4"],"messages":[{"role":"user","question":"Which of the following best explains the statistical behavior observed in the measurements?","answer":"C","hint":"","options":{"A":"The voltage fluctuations are deterministic, and the histogram follows a uniform distribution due to the instrument's resolution limit.","B":"The voltage fluctuations are due to quantization error, and the histogram follows a Poisson distribution because of discrete measurement levels.","C":"The voltage fluctuations are random Gaussian noise, and the histogram follows a normal distribution as per the Central Limit Theorem.","D":"The voltage fluctuations are caused by drift, and the histogram shows a skewed distribution due to systematic error accumulation.","E":"The voltage fluctuations are caused by environmental interference, and the histogram is bimodal due to intermittent external signals."},"choices":[],"video_id":"Electronics_and_Communication_24","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>Which of the following best explains the statistical behavior observed in the measurements?\nA. The voltage fluctuations are deterministic, and the histogram follows a uniform distribution due to the instrument's resolution limit.\nB. The voltage fluctuations are due to quantization error, and the histogram follows a Poisson distribution because of discrete measurement levels.\nC. The voltage fluctuations are random Gaussian noise, and the histogram follows a normal distribution as per the Central Limit Theorem.\nD. The voltage fluctuations are caused by drift, and the histogram shows a skewed distribution due to systematic error accumulation.\nE. The voltage fluctuations are caused by environmental interference, and the histogram is bimodal due to intermittent external signals.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_938","media":["validation_938_0.mp4"],"messages":[{"role":"user","question":"The algorithm demonstrated in the video is called _________.","answer":"Dijkstra's algorithm","hint":"","options":{},"choices":[],"video_id":"Computer_Science_47","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The algorithm demonstrated in the video is called _________."}]},{"id":"validation_939","media":["validation_939_0.mp4"],"messages":[{"role":"user","question":"The video illustrates the concept of _______.","answer":"The Big Bang","hint":"","options":{},"choices":[],"video_id":"Astronomy_4","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The video illustrates the concept of _______."}]},{"id":"validation_94","media":["validation_94_0.mp4"],"messages":[{"role":"user","question":"What medicines can be used to relieve the symptoms of the diseases in the video?","answer":"E","hint":"","options":{"A":"Amoxicillin","B":"Diphenhydramine","C":"Metformin","D":"Lisinopril","E":"Sertraline"},"choices":[],"video_id":"Pharmacy_2","question_type":"multiple-choice","subject":"Pharmacy","prompt":"<video>What medicines can be used to relieve the symptoms of the diseases in the video?\nA. Amoxicillin\nB. Diphenhydramine\nC. Metformin\nD. Lisinopril\nE. Sertraline\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_940","media":["validation_940_0.mp4"],"messages":[{"role":"user","question":"Which of the following concepts is illustrated in the video?","answer":"B","hint":"","options":{"A":"Newton's Law of Universal Gravitation","B":"The Big Bang","C":"Kepler's laws","D":"General Theory of Relativity","E":"Gravitational Waves"},"choices":[],"video_id":"Astronomy_4","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following concepts is illustrated in the video?\nA. Newton's Law of Universal Gravitation\nB. The Big Bang\nC. Kepler's laws\nD. General Theory of Relativity\nE. Gravitational Waves\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_941","media":["validation_941_0.mp4"],"messages":[{"role":"user","question":"The video shows the process of _______ phenomenon.","answer":"lunar eclipse","hint":"","options":{},"choices":[],"video_id":"Astronomy_5","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The video shows the process of _______ phenomenon."}]},{"id":"validation_942","media":["validation_942_0.mp4"],"messages":[{"role":"user","question":"Which of the following phenomenons is being shown in the video?","answer":"D","hint":"","options":{"A":"Supermoon","B":"Changing of lunar phases","C":"Solar eclipse","D":"Lunar eclipse","E":"Tidal locking"},"choices":[],"video_id":"Astronomy_5","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following phenomenons is being shown in the video?\nA. Supermoon\nB. Changing of lunar phases\nC. Solar eclipse\nD. Lunar eclipse\nE. Tidal locking\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_943","media":["validation_943_0.mp4"],"messages":[{"role":"user","question":"The video shows the process of _______ phenomenon.","answer":"lunar eclipse","hint":"","options":{},"choices":[],"video_id":"Astronomy_5","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The video shows the process of _______ phenomenon."}]},{"id":"validation_944","media":["validation_944_0.mp4"],"messages":[{"role":"user","question":"Which of the following phenomenons can people on the earth see in the video?","answer":"E","hint":"","options":{"A":"Total lunar eclipse","B":"Partial lunar eclipse","C":"Supermoon","D":"Total solar eclipse","E":"Partial solar eclipse"},"choices":[],"video_id":"Astronomy_5","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following phenomenons can people on the earth see in the video?\nA. Total lunar eclipse\nB. Partial lunar eclipse\nC. Supermoon\nD. Total solar eclipse\nE. Partial solar eclipse\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_945","media":["validation_945_0.mp4"],"messages":[{"role":"user","question":"The next coming phase is _______.","answer":"Waning Gibbous","hint":"","options":{},"choices":[],"video_id":"Astronomy_6","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The next coming phase is _______."}]},{"id":"validation_946","media":["validation_946_0.mp4"],"messages":[{"role":"user","question":"Which of the following phases is the next phase in the video?","answer":"C","hint":"","options":{"A":"Waxing gibbous","B":"Full moon","C":"Waning gibbous","D":"Last quarter","E":"Waning crescent"},"choices":[],"video_id":"Astronomy_6","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following phases is the next phase in the video?\nA. Waxing gibbous\nB. Full moon\nC. Waning gibbous\nD. Last quarter\nE. Waning crescent\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_947","media":["validation_947_0.mp4"],"messages":[{"role":"user","question":"The phenomenon in the video is called _______.","answer":"gravitational microlensing","hint":"","options":{},"choices":[],"video_id":"Astronomy_7","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The phenomenon in the video is called _______."}]},{"id":"validation_948","media":["validation_948_0.mp4"],"messages":[{"role":"user","question":"Which of the following describes the phenomenon shown in the video?","answer":"A","hint":"","options":{"A":"Gravitational microlensing","B":"Tidal Disruption Events (TDEs)","C":"Supernova","D":"Variable Stars","E":"Solar eclipse"},"choices":[],"video_id":"Astronomy_7","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following describes the phenomenon shown in the video?\nA. Gravitational microlensing\nB. Tidal Disruption Events (TDEs)\nC. Supernova\nD. Variable Stars\nE. Solar eclipse\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_949","media":["validation_949_0.mp4"],"messages":[{"role":"user","question":"The utilized method in the video is called _______.","answer":"transit photometry","hint":"","options":{},"choices":[],"video_id":"Astronomy_8","question_type":"open-ended","subject":"Astronomy","prompt":"<video>The utilized method in the video is called _______."}]},{"id":"validation_95","media":["validation_95_0.mp4"],"messages":[{"role":"user","question":"For the data in the video, if the added parity bit corresponds to the number of apples left on the tree, then it employs ____ parity.","answer":"odd","hint":"","options":{},"choices":[],"video_id":"Electronics_and_Communication_2","question_type":"open-ended","subject":"Electronics and Communication","prompt":"<video>For the data in the video, if the added parity bit corresponds to the number of apples left on the tree, then it employs ____ parity."}]},{"id":"validation_950","media":["validation_950_0.mp4"],"messages":[{"role":"user","question":"Which of the following methods is utilized in the video?","answer":"B","hint":"","options":{"A":"Gravitational microlensing","B":"Transit photometry","C":"Radial velocity method","D":"Pulsar timing","E":"Relativistic beaming"},"choices":[],"video_id":"Astronomy_8","question_type":"multiple-choice","subject":"Astronomy","prompt":"<video>Which of the following methods is utilized in the video?\nA. Gravitational microlensing\nB. Transit photometry\nC. Radial velocity method\nD. Pulsar timing\nE. Relativistic beaming\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_951","media":["validation_951_0.mp4"],"messages":[{"role":"user","question":"The video illustrates the process of _______ surgery.","answer":"orthodontic (maxillofacial)","hint":"","options":{},"choices":[],"video_id":"Dentistry_5","question_type":"open-ended","subject":"Dentistry","prompt":"<video>The video illustrates the process of _______ surgery."}]},{"id":"validation_952","media":["validation_952_0.mp4"],"messages":[{"role":"user","question":"Which of the following surgeries is demonstrated in the video?","answer":"B","hint":"","options":{"A":"Tooth extraction","B":"Maxillofacial surgery","C":"Root canal surgery","D":"Periodontal surgery","E":"Gum contouring or gingivectomy"},"choices":[],"video_id":"Dentistry_5","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which of the following surgeries is demonstrated in the video?\nA. Tooth extraction\nB. Maxillofacial surgery\nC. Root canal surgery\nD. Periodontal surgery\nE. Gum contouring or gingivectomy\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_953","media":["validation_953_0.mp4"],"messages":[{"role":"user","question":"Which condition is the surgery in the video intended to treat?","answer":"D","hint":"","options":{"A":"Severe tooth decay","B":"Periodontitis","C":"Damaged tooth pulp","D":"Jaw misalignment","E":"Excess or diseased gum tissue"},"choices":[],"video_id":"Dentistry_5","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Which condition is the surgery in the video intended to treat?\nA. Severe tooth decay\nB. Periodontitis\nC. Damaged tooth pulp\nD. Jaw misalignment\nE. Excess or diseased gum tissue\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_954","media":["validation_954_0.mp4"],"messages":[{"role":"user","question":"The shown disease requires _______ surgery for effective treatment.","answer":"root canal surgery","hint":"","options":{},"choices":[],"video_id":"Dentistry_6","question_type":"open-ended","subject":"Dentistry","prompt":"<video>The shown disease requires _______ surgery for effective treatment."}]},{"id":"validation_955","media":["validation_955_0.mp4"],"messages":[{"role":"user","question":"The shown disease requires a(n) _______ surgery for effective treatment.","answer":"E","hint":"","options":{"A":"Dental filling","B":"Crown placement","C":"Periodontal therapy","D":"Apicoectomy","E":"root canal surgery"},"choices":[],"video_id":"Dentistry_6","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>The shown disease requires a(n) _______ surgery for effective treatment.\nA. Dental filling\nB. Crown placement\nC. Periodontal therapy\nD. Apicoectomy\nE. root canal surgery\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_956","media":["validation_956_0.mp4"],"messages":[{"role":"user","question":"The building in the video was built in ____ and has important historical and political significance.","answer":"1961","hint":"","options":{},"choices":[],"video_id":"History_0","question_type":"open-ended","subject":"History","prompt":"<video>The building in the video was built in ____ and has important historical and political significance."}]},{"id":"validation_957","media":["validation_957_0.mp4"],"messages":[{"role":"user","question":"The building shown in the video represents a significant historical and political symbol. Based on its construction year, what major event was it directly associated with?","answer":"B","hint":"","options":{"A":"The start of the Korean War","B":"The construction of the Berlin Wall","C":"The signing of the Treaty of Versailles","D":"The establishment of NATO","E":"The fall of the Soviet Union"},"choices":[],"video_id":"History_0","question_type":"multiple-choice","subject":"History","prompt":"<video>The building shown in the video represents a significant historical and political symbol. Based on its construction year, what major event was it directly associated with?\nA. The start of the Korean War\nB. The construction of the Berlin Wall\nC. The signing of the Treaty of Versailles\nD. The establishment of NATO\nE. The fall of the Soviet Union\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_958","media":["validation_958_0.mp4"],"messages":[{"role":"user","question":"Based on the artifacts shown in the video, it can be determined that the exhibition represents the ____ period.","answer":"New Kingdom","hint":"","options":{},"choices":[],"video_id":"History_1","question_type":"open-ended","subject":"History","prompt":"<video>Based on the artifacts shown in the video, it can be determined that the exhibition represents the ____ period."}]},{"id":"validation_959","media":["validation_959_0.mp4"],"messages":[{"role":"user","question":"The objects shown in the video indicate that they come from a certain historical period, judging by their artistic style and cultural connotations. Which period does the exhibition most likely represent?","answer":"C","hint":"","options":{"A":"Old Kingdom","B":"Middle Kingdom","C":"New Kingdom","D":"Predynastic Period","E":"First Intermediate Period"},"choices":[],"video_id":"History_1","question_type":"multiple-choice","subject":"History","prompt":"<video>The objects shown in the video indicate that they come from a certain historical period, judging by their artistic style and cultural connotations. Which period does the exhibition most likely represent?\nA. Old Kingdom\nB. Middle Kingdom\nC. New Kingdom\nD. Predynastic Period\nE. First Intermediate Period\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_96","media":["validation_96_0.mp4"],"messages":[{"role":"user","question":"To design an error-correcting code for a data word(the length is shown at the beginning of the video) that can detect and correct all single-bit errors, using the Hamming code, what is the minimum number of parity bits required?","answer":"A","hint":"","options":{"A":"5","B":"4","C":"6","D":"3","E":"2"},"choices":[],"video_id":"Electronics_and_Communication_2","question_type":"multiple-choice","subject":"Electronics and Communication","prompt":"<video>To design an error-correcting code for a data word(the length is shown at the beginning of the video) that can detect and correct all single-bit errors, using the Hamming code, what is the minimum number of parity bits required?\nA. 5\nB. 4\nC. 6\nD. 3\nE. 2\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_960","media":["validation_960_0.mp4"],"messages":[{"role":"user","question":"The animation depicts a series of historical phenomena. Following these events, the most likely major historical event to occur is the ____.","answer":"French Revolution","hint":"","options":{},"choices":[],"video_id":"History_2","question_type":"open-ended","subject":"History","prompt":"<video>The animation depicts a series of historical phenomena. Following these events, the most likely major historical event to occur is the ____."}]},{"id":"validation_961","media":["validation_961_0.mp4"],"messages":[{"role":"user","question":"The historical transformations depicted suggest increasing societal tensions driven by economic and ideological shifts. Which major event most likely followed?","answer":"C","hint":"","options":{"A":"The American Revolution","B":"The Glorious Revolution","C":"The French Revolution","D":"The Industrial Revolution","E":"The Napoleonic Wars"},"choices":[],"video_id":"History_2","question_type":"multiple-choice","subject":"History","prompt":"<video>The historical transformations depicted suggest increasing societal tensions driven by economic and ideological shifts. Which major event most likely followed?\nA. The American Revolution\nB. The Glorious Revolution\nC. The French Revolution\nD. The Industrial Revolution\nE. The Napoleonic Wars\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_962","media":["validation_962_0.mp4"],"messages":[{"role":"user","question":"Based on the war map shown in the video, one year after the final battle, the ____, a famous naval battle with a profound impact on the war, took place.","answer":"Battle of Mylae","hint":"","options":{},"choices":[],"video_id":"History_3","question_type":"open-ended","subject":"History","prompt":"<video>Based on the war map shown in the video, one year after the final battle, the ____, a famous naval battle with a profound impact on the war, took place."}]},{"id":"validation_963","media":["validation_963_0.mp4"],"messages":[{"role":"user","question":"The war map in the animation illustrates a prolonged conflict culminating in a decisive battle. One year after this final battle, which significant naval engagement took place, altering the course of the war?","answer":"A","hint":"","options":{"A":"Battle of Mylae","B":"Battle of Salamis","C":"Battle of Trafalgar","D":"Battle of Midway","E":"Battle of Tsushima"},"choices":[],"video_id":"History_3","question_type":"multiple-choice","subject":"History","prompt":"<video>The war map in the animation illustrates a prolonged conflict culminating in a decisive battle. One year after this final battle, which significant naval engagement took place, altering the course of the war?\nA. Battle of Mylae\nB. Battle of Salamis\nC. Battle of Trafalgar\nD. Battle of Midway\nE. Battle of Tsushima\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_964","media":["validation_964_0.mp4"],"messages":[{"role":"user","question":"The video argues that one of the most underrated causes of the Renaissance was the __________, which unexpectedly made Italy an intellectual and financial center.","answer":"Black Death","hint":"","options":{},"choices":[],"video_id":"History_4","question_type":"open-ended","subject":"History","prompt":"<video>The video argues that one of the most underrated causes of the Renaissance was the __________, which unexpectedly made Italy an intellectual and financial center."}]},{"id":"validation_965","media":["validation_965_0.mp4"],"messages":[{"role":"user","question":"The animation highlights a historical crrisis that unexpectedly contributed to a region’s economic and intellectual rise. Which event played this role?","answer":"C","hint":"","options":{"A":"The Hundred Years’ War","B":"The Fall of Constantinople","C":"The Black Death","D":"The Protestant Reformation","E":"The Reconquista"},"choices":[],"video_id":"History_4","question_type":"multiple-choice","subject":"History","prompt":"<video>The animation highlights a historical crrisis that unexpectedly contributed to a region’s economic and intellectual rise. Which event played this role?\nA. The Hundred Years’ War\nB. The Fall of Constantinople\nC. The Black Death\nD. The Protestant Reformation\nE. The Reconquista\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_966","media":["validation_966_0.mp4"],"messages":[{"role":"user","question":"As of 2024, according to modern medical technology and protocols, the surgical procedure shown in the video is typically completed in ______ stages.","answer":"three","hint":"","options":{},"choices":[],"video_id":"Dentistry_7","question_type":"open-ended","subject":"Dentistry","prompt":"<video>As of 2024, according to modern medical technology and protocols, the surgical procedure shown in the video is typically completed in ______ stages."}]},{"id":"validation_967","media":["validation_967_0.mp4"],"messages":[{"role":"user","question":"Based on current medical advancements, the type of surgical procedure depicted is typically performed in multiple stages to ensure optimal integration and function. How many stages does this procedure usually involve?","answer":"C","hint":"","options":{"A":"one","B":"two","C":"three","D":"four","E":"five"},"choices":[],"video_id":"Dentistry_7","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>Based on current medical advancements, the type of surgical procedure depicted is typically performed in multiple stages to ensure optimal integration and function. How many stages does this procedure usually involve?\nA. one\nB. two\nC. three\nD. four\nE. five\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_968","media":["validation_968_0.mp4"],"messages":[{"role":"user","question":"Based on the surgical procedure shown in the video, it can be inferred that it demonstrates a complete _____.","answer":"root canal treatment","hint":"","options":{},"choices":[],"video_id":"Dentistry_8","question_type":"open-ended","subject":"Dentistry","prompt":"<video>Based on the surgical procedure shown in the video, it can be inferred that it demonstrates a complete _____."}]},{"id":"validation_969","media":["validation_969_0.mp4"],"messages":[{"role":"user","question":"The surgical procedure depicted involves multiple steps. Based on the video, what type of dental treatment does the video most likely demonstrate?","answer":"B","hint":"","options":{"A":"Tooth extraction","B":"Root canal treatment","C":"Dental implant placement","D":"Gingival graft surgery","E":"Orthodontic bracket bonding"},"choices":[],"video_id":"Dentistry_8","question_type":"multiple-choice","subject":"Dentistry","prompt":"<video>The surgical procedure depicted involves multiple steps. Based on the video, what type of dental treatment does the video most likely demonstrate?\nA. Tooth extraction\nB. Root canal treatment\nC. Dental implant placement\nD. Gingival graft surgery\nE. Orthodontic bracket bonding\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_97","media":["validation_97_0.mp4"],"messages":[{"role":"user","question":"Based on the test shown in the video, the doctor is assessing the integrity of spinal nerve root level **____**.","answer":"C7","hint":"","options":{},"choices":[],"video_id":"Neurobiology_4","question_type":"open-ended","subject":"Neurobiology","prompt":"<video>Based on the test shown in the video, the doctor is assessing the integrity of spinal nerve root level **____**."}]},{"id":"validation_970","media":["validation_970_0.mp4"],"messages":[{"role":"user","question":"In the surgical procedure shown in the video, the square-shaped tool is a ______, which plays a crucial role during the procedure.","answer":"rubber dam sheet","hint":"","options":{},"choices":[],"video_id":"Dentistry_9","question_type":"open-ended","subject":"Dentistry","prompt":"<video>In the surgical procedure shown in the video, the square-shaped tool is a ______, which plays a crucial role during the procedure."}]},{"id":"validation_971","media":["validation_971_0.mp4"],"messages":[{"role":"user","question":"The movement of the lady on the left at the beginning of the video is to prevent ______.","answer":"cross-contamination","hint":"","options":{},"choices":[],"video_id":"Pharmacy_30","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>The movement of the lady on the left at the beginning of the video is to prevent ______."}]},{"id":"validation_972","media":["validation_972_0.mp4"],"messages":[{"role":"user","question":"A medication used to treat arrhythmias, which has historically also been used to treat the disease shown in the video, may cause __________, increasing surgical risks in dental procedures.","answer":"thrombocytopenia","hint":"","options":{},"choices":[],"video_id":"Pharmacy_3","question_type":"open-ended","subject":"Dentistry","prompt":"<video>A medication used to treat arrhythmias, which has historically also been used to treat the disease shown in the video, may cause __________, increasing surgical risks in dental procedures."}]},{"id":"validation_973","media":["validation_973_0.mp4"],"messages":[{"role":"user","question":"Based on a certain toxin that causes the regulatory paralysis shown in the video, it is known as **______**.","answer":"Cycloplegia","hint":"","options":{},"choices":[],"video_id":"Pharmacy_8","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>Based on a certain toxin that causes the regulatory paralysis shown in the video, it is known as **______**."}]},{"id":"validation_974","media":["validation_974_0.mp4"],"messages":[{"role":"user","question":"What is the term for the process of co-ordination of efforts to change the poor outcomes in the video?","answer":"Antibiotic stewardship","hint":"","options":{},"choices":[],"video_id":"Pharmacy_31","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>What is the term for the process of co-ordination of efforts to change the poor outcomes in the video?"}]},{"id":"validation_975","media":["validation_975_0.mp4"],"messages":[{"role":"user","question":"The androgen that causes the condition in the video to occur in men is **________**.","answer":"Dihydrotestosterone","hint":"","options":{},"choices":[],"video_id":"Pharmacy_20","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>The androgen that causes the condition in the video to occur in men is **________**."}]},{"id":"validation_976","media":["validation_976_0.mp4"],"messages":[{"role":"user","question":"According to the video describing the process, the drug can bypass _____ metabolism, thereby increasing its systemic bioavailability.","answer":"first-pass","hint":"","options":{},"choices":[],"video_id":"Pharmacy_21","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>According to the video describing the process, the drug can bypass _____ metabolism, thereby increasing its systemic bioavailability."}]},{"id":"validation_977","media":["validation_977_0.mp4"],"messages":[{"role":"user","question":"For the biological process shown in the video, if a drug can enhance this entire process, the most common oral side effect for dentists to consider is ______.","answer":"xerostomia","hint":"","options":{},"choices":[],"video_id":"Biology_10","question_type":"open-ended","subject":"Dentistry","prompt":"<video>For the biological process shown in the video, if a drug can enhance this entire process, the most common oral side effect for dentists to consider is ______."}]},{"id":"validation_978","media":["validation_978_0.mp4"],"messages":[{"role":"user","question":"What is the most likely drug shown in the video?","answer":"sucralfate","hint":"","options":{},"choices":[],"video_id":"Pharmacy_32","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>What is the most likely drug shown in the video?"}]},{"id":"validation_979","media":["validation_979_0.mp4"],"messages":[{"role":"user","question":"During the video, it should be ensured that the patient's endometrium is in the **_______** stage.","answer":"Secretory","hint":"","options":{},"choices":[],"video_id":"Pharmacy_29","question_type":"open-ended","subject":"Pharmacy","prompt":"<video>During the video, it should be ensured that the patient's endometrium is in the **_______** stage."}]},{"id":"validation_98","media":["validation_98_0.mp4"],"messages":[{"role":"user","question":"In the algorithm demonstrated in the video, suppose we are sorting an array of ‘n’ elements containing duplicate values. The algorithm swaps elements immediately when a new minimum is found during the inner loop, rather than waiting until the end of the pass through the unsorted portion of the array. Based on this swapping strategy, which of the following statements about the stability of the selection sort algorithm is correct?","answer":"B","hint":"","options":{"A":"The algorithm remains stable because swapping identical elements does not affect their relative order.","B":"The algorithm becomes unstable because swapping elements immediately can change the relative order of duplicate elements.","C":"The algorithm remains stable because it only swaps elements when a new minimum is found.","D":"The algorithm becomes unstable only if there are more than two duplicate elements.","E":"The algorithm becomes stable because immediate swaps ensure duplicate elements remain adjacent."},"choices":[],"video_id":"Computer_Science_3","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>In the algorithm demonstrated in the video, suppose we are sorting an array of ‘n’ elements containing duplicate values. The algorithm swaps elements immediately when a new minimum is found during the inner loop, rather than waiting until the end of the pass through the unsorted portion of the array. Based on this swapping strategy, which of the following statements about the stability of the selection sort algorithm is correct?\nA. The algorithm remains stable because swapping identical elements does not affect their relative order.\nB. The algorithm becomes unstable because swapping elements immediately can change the relative order of duplicate elements.\nC. The algorithm remains stable because it only swaps elements when a new minimum is found.\nD. The algorithm becomes unstable only if there are more than two duplicate elements.\nE. The algorithm becomes stable because immediate swaps ensure duplicate elements remain adjacent.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_980","media":["validation_980_0.mp4"],"messages":[{"role":"user","question":"In the clinical procedure shown in the video, the black instrument held by the doctor is a ______.","answer":"laryngoscope","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_34","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In the clinical procedure shown in the video, the black instrument held by the doctor is a ______."}]},{"id":"validation_981","media":["validation_981_0.mp4"],"messages":[{"role":"user","question":"During the cell division process shown in the animation, the number of chromosomes in each daughter cell after division is __.","answer":"4","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_35","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>During the cell division process shown in the animation, the number of chromosomes in each daughter cell after division is __."}]},{"id":"validation_982","media":["validation_982_0.mp4"],"messages":[{"role":"user","question":"The fluid in the video is called _________.","answer":"cutting fluid (coolant)","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_32","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>The fluid in the video is called _________."}]},{"id":"validation_983","media":["validation_983_0.mp4"],"messages":[{"role":"user","question":"After inserting the node with value 49 as the right child of node 47 in the Red-Black tree shown in the video, which type of rotation is required to restore the tree properties?","answer":"left rotation","hint":"","options":{},"choices":[],"video_id":"Computer_Science_48","question_type":"open-ended","subject":"Computer Science","prompt":"<video>After inserting the node with value 49 as the right child of node 47 in the Red-Black tree shown in the video, which type of rotation is required to restore the tree properties?"}]},{"id":"validation_984","media":["validation_984_0.mp4"],"messages":[{"role":"user","question":"In clinical trials, as depicted by the doctor and patient in the video, the study is referred to as a **______** trial.","answer":"double-blind","hint":"","options":{},"choices":[],"video_id":"Pharmacy_4","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>In clinical trials, as depicted by the doctor and patient in the video, the study is referred to as a **______** trial."}]},{"id":"validation_985","media":["validation_985_0.mp4"],"messages":[{"role":"user","question":"Suppose there are n elements here. The maximum number of comparisons needed to find the target using the shown algorithm is ____.","answer":"n","hint":"","options":{},"choices":[],"video_id":"Computer_Science_49","question_type":"open-ended","subject":"Computer Science","prompt":"<video>Suppose there are n elements here. The maximum number of comparisons needed to find the target using the shown algorithm is ____."}]},{"id":"validation_986","media":["validation_986_0.mp4"],"messages":[{"role":"user","question":"As shown in the video, this biological mechanism is referred to as a ________ mechanism.","answer":"negative feedback","hint":"","options":{},"choices":[],"video_id":"Clinical_Medicine_36","question_type":"open-ended","subject":"Clinical Medicine","prompt":"<video>As shown in the video, this biological mechanism is referred to as a ________ mechanism."}]},{"id":"validation_987","media":["validation_987_0.mp4"],"messages":[{"role":"user","question":"In the app's *Magnetic ruler* menu, the variable **dx** adjusted using the sliding scale represents the known _______ between magnets.","answer":"distance","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_33","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>In the app's *Magnetic ruler* menu, the variable **dx** adjusted using the sliding scale represents the known _______ between magnets."}]},{"id":"validation_988","media":["validation_988_0.mp4"],"messages":[{"role":"user","question":"When the engine cylinder glows yellow in the visualization, this phase corresponds to the **_____** stroke in the four-stroke engine cycle.","answer":"combustion (power)","hint":"","options":{},"choices":[],"video_id":"Mechanical_Engineering_34","question_type":"open-ended","subject":"Mechanical Engineering","prompt":"<video>When the engine cylinder glows yellow in the visualization, this phase corresponds to the **_____** stroke in the four-stroke engine cycle."}]},{"id":"validation_989","media":["validation_989_0.mp4"],"messages":[{"role":"user","question":"The traversal method used by the flood fill algorithm is **(____)**.","answer":"breadth-first search","hint":"","options":{},"choices":[],"video_id":"Computer_Science_50","question_type":"open-ended","subject":"Computer Science","prompt":"<video>The traversal method used by the flood fill algorithm is **(____)**."}]},{"id":"validation_99","media":["validation_99_0.mp4"],"messages":[{"role":"user","question":"In the circuit described, the cylinder functions as a **________**.","answer":"capacitor","hint":"","options":{},"choices":[],"video_id":"Electromagnetism_10","question_type":"open-ended","subject":"Electromagnetism","prompt":"<video>In the circuit described, the cylinder functions as a **________**."}]},{"id":"validation_990","media":["validation_990_0.mp4"],"messages":[{"role":"user","question":"Based on the provided clinical information and diagram, which of the following HLA haplotypes is most strongly associated with this patient's condition?","answer":"D","hint":"","options":{"A":"HLA-B27","B":"HLA-DQ2/DQ8","C":"HLA-A3","D":"HLA-DR3/DR4","E":"HLA-DR5"},"choices":[],"video_id":"Clinical_Medicine_37","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>Based on the provided clinical information and diagram, which of the following HLA haplotypes is most strongly associated with this patient's condition?\nA. HLA-B27\nB. HLA-DQ2/DQ8\nC. HLA-A3\nD. HLA-DR3/DR4\nE. HLA-DR5\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_991","media":["validation_991_0.mp4"],"messages":[{"role":"user","question":"Which of the following devices employs the similar mechanism demonstrated in the video?","answer":"E","hint":"","options":{"A":"Centrifugal pump","B":"Axial-flow fan","C":"Rotary screw compressor","D":"Hydraulic turbine","E":"Pulse jet engine"},"choices":[],"video_id":"Mechanical_Engineering_7","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which of the following devices employs the similar mechanism demonstrated in the video?\nA. Centrifugal pump\nB. Axial-flow fan\nC. Rotary screw compressor\nD. Hydraulic turbine\nE. Pulse jet engine\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_992","media":["validation_992_0.mp4"],"messages":[{"role":"user","question":"After inserting 75, 83, and 61, how many rotations will occur in the tree structure to rebalance?","answer":"C","hint":"","options":{"A":"0","B":"1","C":"2","D":"3","E":"4"},"choices":[],"video_id":"Computer_Science_51","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>After inserting 75, 83, and 61, how many rotations will occur in the tree structure to rebalance?\nA. 0\nB. 1\nC. 2\nD. 3\nE. 4\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_993","media":["validation_993_0.mp4"],"messages":[{"role":"user","question":"How many rounds ended in a tie?","answer":"A","hint":"","options":{"A":"0","B":"1","C":"2","D":"3","E":"4"},"choices":[],"video_id":"Mechanical_Engineering_35","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>How many rounds ended in a tie?\nA. 0\nB. 1\nC. 2\nD. 3\nE. 4\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_994","media":["validation_994_0.mp4"],"messages":[{"role":"user","question":"If a vehicle's wheel diameter is increased without altering the speedometer configuration, how does this modification affect the speedometer reading and why?","answer":"B","hint":"","options":{"A":"The speedometer will read a higher speed than the actual speed because the larger wheels cause the cable to rotate faster.","B":"The speedometer will display the same speed as before, but the actual vehicle speed will be higher for the same reading due to the increased wheel circumference.","C":"The speedometer will automatically adjust and display the correct speed despite the wheel size change.","D":"The speedometer will malfunction because the larger wheels disrupt the magnetic interaction within the speedometer.","E":"The speedometer will read zero because the increased wheel size disengages the speedometer cable."},"choices":[],"video_id":"Mechanical_Engineering_36","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>If a vehicle's wheel diameter is increased without altering the speedometer configuration, how does this modification affect the speedometer reading and why?\nA. The speedometer will read a higher speed than the actual speed because the larger wheels cause the cable to rotate faster.\nB. The speedometer will display the same speed as before, but the actual vehicle speed will be higher for the same reading due to the increased wheel circumference.\nC. The speedometer will automatically adjust and display the correct speed despite the wheel size change.\nD. The speedometer will malfunction because the larger wheels disrupt the magnetic interaction within the speedometer.\nE. The speedometer will read zero because the increased wheel size disengages the speedometer cable.\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_995","media":["validation_995_0.mp4"],"messages":[{"role":"user","question":"Which kind of machine structure is not used in the video?","answer":"A","hint":"","options":{"A":"Pulley","B":"Crank","C":"Gear System","D":"Wheel and Axle","E":"Lever"},"choices":[],"video_id":"Mechanical_Engineering_37","question_type":"multiple-choice","subject":"Mechanical Engineering","prompt":"<video>Which kind of machine structure is not used in the video?\nA. Pulley\nB. Crank\nC. Gear System\nD. Wheel and Axle\nE. Lever\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_996","media":["validation_996_0.mp4"],"messages":[{"role":"user","question":"What hypothesis does the video elaborate on mitochondria's origin?","answer":"B","hint":"","options":{"A":"ox-tox hypothesis","B":"endosymbiosis hypothesis","C":"fusion hypothesis","D":"autogenous hypothesis","E":"hydrogen hypothesis"},"choices":[],"video_id":"Biology_6","question_type":"multiple-choice","subject":"Biology","prompt":"<video>What hypothesis does the video elaborate on mitochondria's origin?\nA. ox-tox hypothesis\nB. endosymbiosis hypothesis\nC. fusion hypothesis\nD. autogenous hypothesis\nE. hydrogen hypothesis\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_997","media":["validation_997_0.mp4"],"messages":[{"role":"user","question":"What is the function of the kidney shown in the video?","answer":"B","hint":"","options":{"A":"Secretion of hormones","B":"Filtration function","C":"Ion exchange regulation","D":"Reabsorption function","E":"Regulation of blood pressure"},"choices":[],"video_id":"Clinical_Medicine_27","question_type":"multiple-choice","subject":"Clinical Medicine","prompt":"<video>What is the function of the kidney shown in the video?\nA. Secretion of hormones\nB. Filtration function\nC. Ion exchange regulation\nD. Reabsorption function\nE. Regulation of blood pressure\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_998","media":["validation_998_0.mp4"],"messages":[{"role":"user","question":"How many spins collapses their wave functions under the observation of the cat?","answer":"D","hint":"","options":{"A":"3","B":"6","C":"4","D":"8","E":"5"},"choices":[],"video_id":"Modern_Physics_2","question_type":"multiple-choice","subject":"Modern Physics","prompt":"<video>How many spins collapses their wave functions under the observation of the cat?\nA. 3\nB. 6\nC. 4\nD. 8\nE. 5\nAnswer with the option's letter from the given choices directly."}]},{"id":"validation_999","media":["validation_999_0.mp4"],"messages":[{"role":"user","question":"What algorithm may the video be introducing","answer":"E","hint":"","options":{"A":"Floyd-Warshall algorithm","B":"Dijkstra algorithm","C":"Kruskal's algorithm","D":"Prim's algorithm","E":"Bellman-Ford algorithm"},"choices":[],"video_id":"Computer_Science_7","question_type":"multiple-choice","subject":"Computer Science","prompt":"<video>What algorithm may the video be introducing\nA. Floyd-Warshall algorithm\nB. Dijkstra algorithm\nC. Kruskal's algorithm\nD. Prim's algorithm\nE. Bellman-Ford algorithm\nAnswer with the option's letter from the given choices directly."}]}]