gem_id stringlengths 20 25 | id stringlengths 24 24 | title stringlengths 3 59 | context stringlengths 151 3.71k | question stringlengths 1 270 | target stringlengths 1 270 | references list | answers dict |
|---|---|---|---|---|---|---|---|
gem-squad_v2-train-25900 | 5a8371c6e60761001a2eb71b | Copper | Gram quantities of various copper salts have been taken in suicide attempts and produced acute copper toxicity in humans, possibly due to redox cycling and the generation of reactive oxygen species that damage DNA. Corresponding amounts of copper salts (30 mg/kg) are toxic in animals. A minimum dietary value for health... | What are copper peppers sometimes used for? | What are copper peppers sometimes used for? | [
"What are copper peppers sometimes used for?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25901 | 5a8371c6e60761001a2eb71c | Copper | Gram quantities of various copper salts have been taken in suicide attempts and produced acute copper toxicity in humans, possibly due to redox cycling and the generation of reactive oxygen species that damage DNA. Corresponding amounts of copper salts (30 mg/kg) are toxic in animals. A minimum dietary value for health... | When ingested in small amounts what does copper salts produce in humans? | When ingested in small amounts what does copper salts produce in humans? | [
"When ingested in small amounts what does copper salts produce in humans?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25902 | 5a8371c6e60761001a2eb71d | Copper | Gram quantities of various copper salts have been taken in suicide attempts and produced acute copper toxicity in humans, possibly due to redox cycling and the generation of reactive oxygen species that damage DNA. Corresponding amounts of copper salts (30 mg/kg) are toxic in animals. A minimum dietary value for health... | What is the minimum amount of copper dragons should have in their diet? | What is the minimum amount of copper dragons should have in their diet? | [
"What is the minimum amount of copper dragons should have in their diet?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25903 | 5a8371c6e60761001a2eb71e | Copper | Gram quantities of various copper salts have been taken in suicide attempts and produced acute copper toxicity in humans, possibly due to redox cycling and the generation of reactive oxygen species that damage DNA. Corresponding amounts of copper salts (30 mg/kg) are toxic in animals. A minimum dietary value for health... | What is a major benefit to dragons having a higher concentration of copper in their diet? | What is a major benefit to dragons having a higher concentration of copper in their diet? | [
"What is a major benefit to dragons having a higher concentration of copper in their diet?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25904 | 5a8371c6e60761001a2eb71f | Copper | Gram quantities of various copper salts have been taken in suicide attempts and produced acute copper toxicity in humans, possibly due to redox cycling and the generation of reactive oxygen species that damage DNA. Corresponding amounts of copper salts (30 mg/kg) are toxic in animals. A minimum dietary value for health... | What amount of copper salt is toxic in robots? | What amount of copper salt is toxic in robots? | [
"What amount of copper salt is toxic in robots?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25905 | 5709828fed30961900e84244 | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | When did Britain first use brass? | When did Britain first use brass? | [
"When did Britain first use brass?"
] | {
"text": [
"3rd–2nd century BC"
],
"answer_start": [
49
]
} |
gem-squad_v2-train-25906 | 5709828fed30961900e84245 | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | Who were the first copper miners in North America? | Who were the first copper miners in North America? | [
"Who were the first copper miners in North America?"
] | {
"text": [
"Native Americans"
],
"answer_start": [
133
]
} |
gem-squad_v2-train-25907 | 5709828fed30961900e84246 | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | Where was native copper extracted with primitive tools between 800 and 1600? | Where was native copper extracted with primitive tools between 800 and 1600? | [
"Where was native copper extracted with primitive tools between 800 and 1600?"
] | {
"text": [
"Isle Royale"
],
"answer_start": [
211
]
} |
gem-squad_v2-train-25908 | 5709828fed30961900e84247 | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | What country had a strong copper production in 1000 AD | What country had a strong copper production in 1000 AD | [
"What country had a strong copper production in 1000 AD"
] | {
"text": [
"Peru"
],
"answer_start": [
340
]
} |
gem-squad_v2-train-25909 | 5709828fed30961900e84248 | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | When did commercial production of copper begin? | When did commercial production of copper begin? | [
"When did commercial production of copper begin?"
] | {
"text": [
"early 20th century"
],
"answer_start": [
548
]
} |
gem-squad_v2-train-25910 | 5a836aeee60761001a2eb68b | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | When did Britain ban use of brass? | When did Britain ban use of brass? | [
"When did Britain ban use of brass?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25911 | 5a836aeee60761001a2eb68c | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | Who were the only copper miners in North America? | Who were the only copper miners in North America? | [
"Who were the only copper miners in North America?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25912 | 5a836aeee60761001a2eb68d | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | Where was native copper hidden with primitive tools between 800 and 1600? | Where was native copper hidden with primitive tools between 800 and 1600? | [
"Where was native copper hidden with primitive tools between 800 and 1600?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25913 | 5a836aeee60761001a2eb68e | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | What country stopped a strong copper production in 1000 AD? | What country stopped a strong copper production in 1000 AD? | [
"What country stopped a strong copper production in 1000 AD?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25914 | 5a836aeee60761001a2eb68f | Copper | Britain's first use of brass occurred around the 3rd–2nd century BC. In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. Copper metallurgy was flourishing in South Ameri... | When did commercial production of copper end? | When did commercial production of copper end? | [
"When did commercial production of copper end?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25915 | 5709844f200fba1400368107 | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | How many isotopes are there of copper? | How many isotopes are there of copper? | [
"How many isotopes are there of copper?"
] | {
"text": [
"29"
],
"answer_start": [
10
]
} |
gem-squad_v2-train-25916 | 5709844f200fba1400368108 | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What are the two stable isotopes of cooper? | What are the two stable isotopes of cooper? | [
"What are the two stable isotopes of cooper?"
] | {
"text": [
"63Cu and 65Cu"
],
"answer_start": [
33
]
} |
gem-squad_v2-train-25917 | 5709844f200fba1400368109 | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | Which isotope makes up about 69% of natural copper? | Which isotope makes up about 69% of natural copper? | [
"Which isotope makes up about 69% of natural copper?"
] | {
"text": [
"63Cu"
],
"answer_start": [
64
]
} |
gem-squad_v2-train-25918 | 5709844f200fba140036810a | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What is the half life of the copper isotope 68mCu? | What is the half life of the copper isotope 68mCu? | [
"What is the half life of the copper isotope 68mCu?"
] | {
"text": [
"3.8 minutes"
],
"answer_start": [
360
]
} |
gem-squad_v2-train-25919 | 5709844f200fba140036810b | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What is the half life of the copper isotope 67Cu? | What is the half life of the copper isotope 67Cu? | [
"What is the half life of the copper isotope 67Cu?"
] | {
"text": [
"61.83 hours"
],
"answer_start": [
247
]
} |
gem-squad_v2-train-25920 | 5a83518ce60761001a2eb56d | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | How many isotopes are missing in copper? | How many isotopes are missing in copper? | [
"How many isotopes are missing in copper?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25921 | 5a83518ce60761001a2eb56e | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What are the two dangerous isotopes of copper? | What are the two dangerous isotopes of copper? | [
"What are the two dangerous isotopes of copper?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25922 | 5a83518ce60761001a2eb56f | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | Which isotope makes up about 74% of natural copper? | Which isotope makes up about 74% of natural copper? | [
"Which isotope makes up about 74% of natural copper?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25923 | 5a83518ce60761001a2eb570 | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What is the half life of the supernatural isotope 68mCu? | What is the half life of the supernatural isotope 68mCu? | [
"What is the half life of the supernatural isotope 68mCu?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25924 | 5a83518ce60761001a2eb571 | Copper | There are 29 isotopes of copper. 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper; they both have a spin of 3⁄2. The other isotopes are radioactive, with the most stable being 67Cu with a half-life of 61.83 hours. Seven metastable isotopes have been characterized, with 68mC... | What is the orbital period of the copper isotope 67Cu? | What is the orbital period of the copper isotope 67Cu? | [
"What is the orbital period of the copper isotope 67Cu?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25925 | 5709867b200fba1400368143 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What is the alloy of copper and nickel called? | What is the alloy of copper and nickel called? | [
"What is the alloy of copper and nickel called?"
] | {
"text": [
"cupronickel"
],
"answer_start": [
39
]
} |
gem-squad_v2-train-25926 | 5709867b200fba1400368144 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | what is the alloy of copper and nickel used for? | what is the alloy of copper and nickel used for? | [
"what is the alloy of copper and nickel used for?"
] | {
"text": [
"low-denomination coins"
],
"answer_start": [
63
]
} |
gem-squad_v2-train-25927 | 5709867b200fba1400368145 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What is the metal composition of a US nickel? | What is the metal composition of a US nickel? | [
"What is the metal composition of a US nickel?"
] | {
"text": [
"75% copper and 25% nickel"
],
"answer_start": [
164
]
} |
gem-squad_v2-train-25928 | 5709867b200fba1400368146 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What extraordinary property does the alloy made up of 90% copper and 10% nickel possess? | What extraordinary property does the alloy made up of 90% copper and 10% nickel possess? | [
"What extraordinary property does the alloy made up of 90% copper and 10% nickel possess?"
] | {
"text": [
"resistance to corrosion"
],
"answer_start": [
297
]
} |
gem-squad_v2-train-25929 | 5709867b200fba1400368147 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What color is created when the alloys of copper and aluminium are combined? | What color is created when the alloys of copper and aluminium are combined? | [
"What color is created when the alloys of copper and aluminium are combined?"
] | {
"text": [
"golden"
],
"answer_start": [
439
]
} |
gem-squad_v2-train-25930 | 5a836094e60761001a2eb62f | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What is the liquid of copper and nickel called? | What is the liquid of copper and nickel called? | [
"What is the liquid of copper and nickel called?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25931 | 5a836094e60761001a2eb630 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What is the liquid of copper and nickel never used for? | What is the liquid of copper and nickel never used for? | [
"What is the liquid of copper and nickel never used for?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25932 | 5a836094e60761001a2eb631 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What is the wood composition of a US nickel? | What is the wood composition of a US nickel? | [
"What is the wood composition of a US nickel?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25933 | 5a836094e60761001a2eb632 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What mundane property does the alloy made up of 90% copper and 10% nickel possess? | What mundane property does the alloy made up of 90% copper and 10% nickel possess? | [
"What mundane property does the alloy made up of 90% copper and 10% nickel possess?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25934 | 5a836094e60761001a2eb633 | Copper | The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding. The US 5-cent coin called a nickel consists of 75% copper and 25% nickel and has a homogeneous composition. The alloy consisting of 90% copper and 10% nickel is remarkable for its resistance to corrosion... | What color is created when the alloys of copper and aluminium are apart? | What color is created when the alloys of copper and aluminium are apart? | [
"What color is created when the alloys of copper and aluminium are apart?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25935 | 5709880eed30961900e842a4 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What is the name of the componds that has more than one alcohol functional group? | What is the name of the componds that has more than one alcohol functional group? | [
"What is the name of the componds that has more than one alcohol functional group?"
] | {
"text": [
"Polyols"
],
"answer_start": [
0
]
} |
gem-squad_v2-train-25936 | 5709880eed30961900e842a5 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What are copper salts used to test? | What are copper salts used to test? | [
"What are copper salts used to test?"
] | {
"text": [
"reducing sugars"
],
"answer_start": [
155
]
} |
gem-squad_v2-train-25937 | 5709880eed30961900e842a6 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | How is the presence of sugar shown by using Benedict's reagent and Fehling's solution? | How is the presence of sugar shown by using Benedict's reagent and Fehling's solution? | [
"How is the presence of sugar shown by using Benedict's reagent and Fehling's solution?"
] | {
"text": [
"color change"
],
"answer_start": [
277
]
} |
gem-squad_v2-train-25938 | 5709880eed30961900e842a7 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What color does the copper salts turn to using Benedict's reagent and Fehling's solution if sugar is present? | What color does the copper salts turn to using Benedict's reagent and Fehling's solution if sugar is present? | [
"What color does the copper salts turn to using Benedict's reagent and Fehling's solution if sugar is present?"
] | {
"text": [
"reddish"
],
"answer_start": [
310
]
} |
gem-squad_v2-train-25939 | 5709880eed30961900e842a8 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What does Schweizer's reagent dissolve? | What does Schweizer's reagent dissolve? | [
"What does Schweizer's reagent dissolve?"
] | {
"text": [
"cellulose"
],
"answer_start": [
424
]
} |
gem-squad_v2-train-25940 | 5a836387e60761001a2eb64d | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What is the name of the compounds that have no alcohol functional group? | What is the name of the compounds that have no alcohol functional group? | [
"What is the name of the compounds that have no alcohol functional group?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25941 | 5a836387e60761001a2eb64e | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What are copper salts used to burn? | What are copper salts used to burn? | [
"What are copper salts used to burn?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25942 | 5a836387e60761001a2eb64f | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | How is the presence of sugar hidden by using Benedict's reagent and Fehling's solution? | How is the presence of sugar hidden by using Benedict's reagent and Fehling's solution? | [
"How is the presence of sugar hidden by using Benedict's reagent and Fehling's solution?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25943 | 5a836387e60761001a2eb650 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What color does the copper salts turn to using Benedict's reagent and Fehling's solution if dust is present? | What color does the copper salts turn to using Benedict's reagent and Fehling's solution if dust is present? | [
"What color does the copper salts turn to using Benedict's reagent and Fehling's solution if dust is present?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25944 | 5a836387e60761001a2eb651 | Copper | Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish co... | What does Schweizer's reagent grow? | What does Schweizer's reagent grow? | [
"What does Schweizer's reagent grow?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25945 | 57098a0b200fba140036816b | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What started about 4000 years after copper smelting was discovered? | What started about 4000 years after copper smelting was discovered? | [
"What started about 4000 years after copper smelting was discovered?"
] | {
"text": [
"Alloying copper with tin to make bronze"
],
"answer_start": [
0
]
} |
gem-squad_v2-train-25946 | 57098a0b200fba140036816c | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What are the first datings of Bronze artifacts from the Vinca culture? | What are the first datings of Bronze artifacts from the Vinca culture? | [
"What are the first datings of Bronze artifacts from the Vinca culture?"
] | {
"text": [
"4500 BC"
],
"answer_start": [
253
]
} |
gem-squad_v2-train-25947 | 57098a0b200fba140036816d | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | When did the Bronze Age began in Southeastern Europe? | When did the Bronze Age began in Southeastern Europe? | [
"When did the Bronze Age began in Southeastern Europe?"
] | {
"text": [
"3700–3300 BC"
],
"answer_start": [
390
]
} |
gem-squad_v2-train-25948 | 57098a0b200fba140036816e | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What was the transition between the Neolithic period and the bronze age called? | What was the transition between the Neolithic period and the bronze age called? | [
"What was the transition between the Neolithic period and the bronze age called?"
] | {
"text": [
"Chalcolithic"
],
"answer_start": [
632
]
} |
gem-squad_v2-train-25949 | 57098a0b200fba140036816f | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What is an alloy of copper and zinc? | What is an alloy of copper and zinc? | [
"What is an alloy of copper and zinc?"
] | {
"text": [
"Brass"
],
"answer_start": [
855
]
} |
gem-squad_v2-train-25950 | 5a836761e60761001a2eb677 | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What started about 3000 years after copper smelting was discovered? | What started about 3000 years after copper smelting was discovered? | [
"What started about 3000 years after copper smelting was discovered?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25951 | 5a836761e60761001a2eb678 | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What are the first datings of Platinum artifacts from the Vinca culture? | What are the first datings of Platinum artifacts from the Vinca culture? | [
"What are the first datings of Platinum artifacts from the Vinca culture?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25952 | 5a836761e60761001a2eb679 | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | When did the Silver Age begin in Southeastern Europe? | When did the Silver Age begin in Southeastern Europe? | [
"When did the Silver Age begin in Southeastern Europe?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25953 | 5a836761e60761001a2eb67a | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What was the transition between the Neolithic period and the silver age called? | What was the transition between the Neolithic period and the silver age called? | [
"What was the transition between the Neolithic period and the silver age called?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25954 | 5a836761e60761001a2eb67b | Copper | Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinča culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloy... | What is an alloy of copper and brass? | What is an alloy of copper and brass? | [
"What is an alloy of copper and brass?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25955 | 57098b07200fba1400368175 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What is the level of copper in the human body? | What is the level of copper in the human body? | [
"What is the level of copper in the human body?"
] | {
"text": [
"1.4 to 2.1 mg per kg of body mass"
],
"answer_start": [
140
]
} |
gem-squad_v2-train-25956 | 57098b07200fba1400368176 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | How is copper absorbed in humans? | How is copper absorbed in humans? | [
"How is copper absorbed in humans?"
] | {
"text": [
"in the gut"
],
"answer_start": [
302
]
} |
gem-squad_v2-train-25957 | 57098b07200fba1400368177 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What is copper bound with when it is sent to the liver? | What is copper bound with when it is sent to the liver? | [
"What is copper bound with when it is sent to the liver?"
] | {
"text": [
"albumin"
],
"answer_start": [
353
]
} |
gem-squad_v2-train-25958 | 57098b07200fba1400368178 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What protein carries the majority of copper in blood? | What protein carries the majority of copper in blood? | [
"What protein carries the majority of copper in blood?"
] | {
"text": [
"Ceruloplasmin"
],
"answer_start": [
556
]
} |
gem-squad_v2-train-25959 | 57098b07200fba1400368179 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | How can the body get rid of excess copper? | How can the body get rid of excess copper? | [
"How can the body get rid of excess copper?"
] | {
"text": [
"via bile"
],
"answer_start": [
889
]
} |
gem-squad_v2-train-25960 | 5a837151e60761001a2eb711 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What is the level of copper in gold? | What is the level of copper in gold? | [
"What is the level of copper in gold?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25961 | 5a837151e60761001a2eb712 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | How is copper reflected in humans? | How is copper reflected in humans? | [
"How is copper reflected in humans?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25962 | 5a837151e60761001a2eb713 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What is copper bound with when it is sent to the brain? | What is copper bound with when it is sent to the brain? | [
"What is copper bound with when it is sent to the brain?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25963 | 5a837151e60761001a2eb714 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | What hero carries the majority of copper in blood? | What hero carries the majority of copper in blood? | [
"What hero carries the majority of copper in blood?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25964 | 5a837151e60761001a2eb715 | Copper | Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then t... | How can the sand get rid of excess copper? | How can the sand get rid of excess copper? | [
"How can the sand get rid of excess copper?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25965 | 57098d1bed30961900e842e0 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What is the average concentration of copper in ores? | What is the average concentration of copper in ores? | [
"What is the average concentration of copper in ores?"
] | {
"text": [
"0.6%"
],
"answer_start": [
50
]
} |
gem-squad_v2-train-25966 | 57098d1bed30961900e842e1 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What are most commercial ores? | What are most commercial ores? | [
"What are most commercial ores?"
] | {
"text": [
"sulfides"
],
"answer_start": [
85
]
} |
gem-squad_v2-train-25967 | 57098d1bed30961900e842e2 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What does heating copper ore materials with silica remove? | What does heating copper ore materials with silica remove? | [
"What does heating copper ore materials with silica remove?"
] | {
"text": [
"iron"
],
"answer_start": [
357
]
} |
gem-squad_v2-train-25968 | 57098d1bed30961900e842e3 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What happens to the silicate slag during the flash smelting process? | What happens to the silicate slag during the flash smelting process? | [
"What happens to the silicate slag during the flash smelting process?"
] | {
"text": [
"floats on top"
],
"answer_start": [
523
]
} |
gem-squad_v2-train-25969 | 57098d1bed30961900e842e4 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What do the sulfides convert to after the copper matte is roasted? | What do the sulfides convert to after the copper matte is roasted? | [
"What do the sulfides convert to after the copper matte is roasted?"
] | {
"text": [
"oxides"
],
"answer_start": [
648
]
} |
gem-squad_v2-train-25970 | 5a8359d6e60761001a2eb5fd | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What is the average concentration of copper in holes? | What is the average concentration of copper in holes? | [
"What is the average concentration of copper in holes?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25971 | 5a8359d6e60761001a2eb5fe | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What are most fake ores? | What are most fake ores? | [
"What are most fake ores?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25972 | 5a8359d6e60761001a2eb5ff | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What does freezing copper ore materials with silica remove? | What does freezing copper ore materials with silica remove? | [
"What does freezing copper ore materials with silica remove?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25973 | 5a8359d6e60761001a2eb600 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What happens to the silicate slag during the flash freezing process? | What happens to the silicate slag during the flash freezing process? | [
"What happens to the silicate slag during the flash freezing process?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25974 | 5a8359d6e60761001a2eb601 | Copper | The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides, especially chalcopyrite (CuFeS2) and to a lesser extent chalcocite (Cu2S). These minerals are concentrated from crushed ores to the level of 10–15% copper by froth flotation or bioleaching. Heating this material with silica i... | What do the sulfides convert to after the copper matte is frozen? | What do the sulfides convert to after the copper matte is frozen? | [
"What do the sulfides convert to after the copper matte is frozen?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25975 | 57098edded30961900e8430e | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | How many metals have a natural color that isn't gray? | How many metals have a natural color that isn't gray? | [
"How many metals have a natural color that isn't gray?"
] | {
"text": [
"four"
],
"answer_start": [
89
]
} |
gem-squad_v2-train-25976 | 57098edded30961900e8430f | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What color is pure copper? | What color is pure copper? | [
"What color is pure copper?"
] | {
"text": [
"orange-red"
],
"answer_start": [
174
]
} |
gem-squad_v2-train-25977 | 57098edded30961900e84310 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What does copper aquire when exposed to air? | What does copper aquire when exposed to air? | [
"What does copper aquire when exposed to air?"
] | {
"text": [
"reddish tarnish"
],
"answer_start": [
200
]
} |
gem-squad_v2-train-25978 | 57098edded30961900e84311 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | The energy difference between filled 3d and half-empty 4s atomic shells corresponds to what color of light? | The energy difference between filled 3d and half-empty 4s atomic shells corresponds to what color of light? | [
"The energy difference between filled 3d and half-empty 4s atomic shells corresponds to what color of light?"
] | {
"text": [
"orange light"
],
"answer_start": [
442
]
} |
gem-squad_v2-train-25979 | 57098edded30961900e84312 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What color is the metal caesium? | What color is the metal caesium? | [
"What color is the metal caesium?"
] | {
"text": [
"yellow"
],
"answer_start": [
37
]
} |
gem-squad_v2-train-25980 | 5a835042e60761001a2eb565 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | How many grains of sand have a natural color that isn't gray? | How many grains of sand have a natural color that isn't gray? | [
"How many grains of sand have a natural color that isn't gray?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25981 | 5a835042e60761001a2eb566 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What color is fake copper? | What color is fake copper? | [
"What color is fake copper?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25982 | 5a835042e60761001a2eb567 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What does copper glow when exposed to air? | What does copper glow when exposed to air? | [
"What does copper glow when exposed to air?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25983 | 5a835042e60761001a2eb568 | Copper | Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between ... | What color is the planet caesium? | What color is the planet caesium? | [
"What color is the planet caesium?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25984 | 570990baed30961900e84338 | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What has copper been used for since ancient times? | What has copper been used for since ancient times? | [
"What has copper been used for since ancient times?"
] | {
"text": [
"architectural material"
],
"answer_start": [
93
]
} |
gem-squad_v2-train-25985 | 570990baed30961900e84339 | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | In recent times what is one interior use copper been expanded to include? | In recent times what is one interior use copper been expanded to include? | [
"In recent times what is one interior use copper been expanded to include?"
] | {
"text": [
"antimicrobial indoor products"
],
"answer_start": [
424
]
} |
gem-squad_v2-train-25986 | 570990baed30961900e8433a | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What is an important benefit to using copper as an architectural material? | What is an important benefit to using copper as an architectural material? | [
"What is an important benefit to using copper as an architectural material?"
] | {
"text": [
"low thermal movement"
],
"answer_start": [
605
]
} |
gem-squad_v2-train-25987 | 570990baed30961900e8433b | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | How long has copper been used in building construction? | How long has copper been used in building construction? | [
"How long has copper been used in building construction?"
] | {
"text": [
"hundreds or thousands of years"
],
"answer_start": [
225
]
} |
gem-squad_v2-train-25988 | 570990baed30961900e8433c | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What is the benefit to using copper for things such as counter tops and hand rails? | What is the benefit to using copper for things such as counter tops and hand rails? | [
"What is the benefit to using copper for things such as counter tops and hand rails?"
] | {
"text": [
"antimicrobial"
],
"answer_start": [
424
]
} |
gem-squad_v2-train-25989 | 5a836e5fe60761001a2eb6cd | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What has copper been avoided as since ancient times? | What has copper been avoided as since ancient times? | [
"What has copper been avoided as since ancient times?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25990 | 5a836e5fe60761001a2eb6ce | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What is one interior use copper has been forbidden to include? | What is one interior use copper has been forbidden to include? | [
"What is one interior use copper has been forbidden to include?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25991 | 5a836e5fe60761001a2eb6cf | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What is an important danger to using copper as an architectural material? | What is an important danger to using copper as an architectural material? | [
"What is an important danger to using copper as an architectural material?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25992 | 5a836e5fe60761001a2eb6d0 | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | How long has copper been banned in building construction? | How long has copper been banned in building construction? | [
"How long has copper been banned in building construction?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25993 | 5a836e5fe60761001a2eb6d1 | Copper | Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Roofs, flashings, rain gutters, downspouts, domes, spires, vaults, and doors have been made from copper for hundreds or thousands of years. Copper's architectural use has been expanded in modern times to... | What is the danger to using copper for things such as counter tops and hand rails? | What is the danger to using copper for things such as counter tops and hand rails? | [
"What is the danger to using copper for things such as counter tops and hand rails?"
] | {
"text": [],
"answer_start": []
} |
gem-squad_v2-train-25994 | 572699c4dd62a815002e8ab2 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | Where was Burke born? | Where was Burke born? | [
"Where was Burke born?"
] | {
"text": [
"Dublin, Ireland"
],
"answer_start": [
18
]
} |
gem-squad_v2-train-25995 | 572699c4dd62a815002e8ab3 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | What was Burke's mother's maiden name? | What was Burke's mother's maiden name? | [
"What was Burke's mother's maiden name?"
] | {
"text": [
"Nagle"
],
"answer_start": [
55
]
} |
gem-squad_v2-train-25996 | 572699c4dd62a815002e8ab4 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | When did Burke's mother die? | When did Burke's mother die? | [
"When did Burke's mother die?"
] | {
"text": [
"1770"
],
"answer_start": [
72
]
} |
gem-squad_v2-train-25997 | 572699c4dd62a815002e8ab5 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | When did Burke's father die? | When did Burke's father die? | [
"When did Burke's father die?"
] | {
"text": [
"1761"
],
"answer_start": [
233
]
} |
gem-squad_v2-train-25998 | 572699c4dd62a815002e8ab6 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | When did Burke's ancestors arrive in Ireland? | When did Burke's ancestors arrive in Ireland? | [
"When did Burke's ancestors arrive in Ireland?"
] | {
"text": [
"1185"
],
"answer_start": [
492
]
} |
gem-squad_v2-train-25999 | 5ad0b1c6645df0001a2d0084 | Edmund_Burke | Burke was born in Dublin, Ireland. His mother Mary née Nagle (c. 1702 – 1770) was a Roman Catholic who hailed from a déclassé County Cork family (and a cousin of Nano Nagle), whereas his father, a successful solicitor, Richard (died 1761), was a member of the Church of Ireland; it remains unclear whether this is the sa... | What city was Mary nee Nagle born in? | What city was Mary nee Nagle born in? | [
"What city was Mary nee Nagle born in?"
] | {
"text": [],
"answer_start": []
} |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.