EASY_TASK = {
    "task_id": "task_easy",
    "difficulty": "easy",
    "description": (
        "Classify clips with dominant quality evidence. Return one label in {KEEP, BORDERLINE, REJECT} with brief metadata-grounded reasoning."
    ),
    "data_corpus": [
        {
            "clip_id": "clip_0011",
            "duration_s": 16.04,
            "fps": 25,
            "resolution": "1280x704",
            "face_area_ratio": 0.28,
            "face_confidence": 0.8263,
            "head_pose_yaw_deg": 8.317,
            "head_pose_pitch_deg": 5.772,
            "motion_score": 0.0222,
            "bg_complexity": "solid_dark",
            "bg_complexity_score": 0.0499,
            "mouth_open_ratio": 0.2721,
            "blink_rate_hz": 0.25,
            "audio_snr_db": 23.226,
            "transcript_word_count": 35,
            "transcript_confidence": 0.4506,
            "lighting_uniformity": 0.8243,
            "occlusion_present": False,
            "environment_tag": "podcast_studio",
            "framing": "offgaze",
            "expected_label": "KEEP",
            "sharpness_score": 0.0101,
            "temporal_flicker": 0.0047,
            "bg_entropy": 0.6495,
            "eye_contact_ratio": 0.0,
            "speech_rate_wpm": 130.92,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0012",
            "duration_s": 9.195,
            "fps": 25,
            "resolution": "1280x704",
            "face_area_ratio": 0.28,
            "face_confidence": 0.5599,
            "head_pose_yaw_deg": 9.131,
            "head_pose_pitch_deg": 5.257,
            "motion_score": 0.0269,
            "bg_complexity": "busy_room",
            "bg_complexity_score": 0.114,
            "mouth_open_ratio": 0.4881,
            "blink_rate_hz": 0.25,
            "audio_snr_db": 15.997,
            "transcript_word_count": 31,
            "transcript_confidence": 0.4506,
            "lighting_uniformity": 0.5707,
            "occlusion_present": True,
            "environment_tag": "webcam_room",
            "framing": "offgaze",
            "expected_label": "KEEP",
            "sharpness_score": 0.0274,
            "temporal_flicker": 0.0126,
            "bg_entropy": 0.5864,
            "eye_contact_ratio": 0.0,
            "speech_rate_wpm": 202.28,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0013",
            "duration_s": 11.337,
            "fps": 25,
            "resolution": "1280x704",
            "face_area_ratio": 0.28,
            "face_confidence": 0.7018,
            "head_pose_yaw_deg": 8.789,
            "head_pose_pitch_deg": 5.462,
            "motion_score": 0.0315,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.0838,
            "mouth_open_ratio": 0.4322,
            "blink_rate_hz": 0.25,
            "audio_snr_db": 23.736,
            "transcript_word_count": 34,
            "transcript_confidence": 0.4506,
            "lighting_uniformity": 0.7066,
            "occlusion_present": False,
            "environment_tag": "office",
            "framing": "offgaze",
            "expected_label": "KEEP",
            "sharpness_score": 0.0342,
            "temporal_flicker": 0.0116,
            "bg_entropy": 0.8032,
            "eye_contact_ratio": 0.0,
            "speech_rate_wpm": 179.94,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0014",
            "duration_s": 11.572,
            "fps": 25,
            "resolution": "1280x704",
            "face_area_ratio": 0.28,
            "face_confidence": 0.7652,
            "head_pose_yaw_deg": 8.494,
            "head_pose_pitch_deg": 5.651,
            "motion_score": 0.0275,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.0709,
            "mouth_open_ratio": 0.4209,
            "blink_rate_hz": 0.25,
            "audio_snr_db": 21.079,
            "transcript_word_count": 34,
            "transcript_confidence": 0.447,
            "lighting_uniformity": 0.743,
            "occlusion_present": False,
            "environment_tag": "office",
            "framing": "offgaze",
            "expected_label": "REJECT",
            "sharpness_score": 0.0173,
            "temporal_flicker": 0.0226,
            "bg_entropy": 0.4559,
            "eye_contact_ratio": 0.0,
            "speech_rate_wpm": 176.29,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0015",
            "duration_s": 14.028,
            "fps": 25,
            "resolution": "1280x704",
            "face_area_ratio": 0.28,
            "face_confidence": 0.7695,
            "head_pose_yaw_deg": 7.347,
            "head_pose_pitch_deg": 6.533,
            "motion_score": 0.0153,
            "bg_complexity": "solid_dark",
            "bg_complexity_score": 0.0626,
            "mouth_open_ratio": 0.3264,
            "blink_rate_hz": 0.25,
            "audio_snr_db": 18.096,
            "transcript_word_count": 39,
            "transcript_confidence": 0.4521,
            "lighting_uniformity": 0.7731,
            "occlusion_present": False,
            "environment_tag": "podcast_studio",
            "framing": "offgaze",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.0131,
            "temporal_flicker": 0.0089,
            "bg_entropy": 0.7435,
            "eye_contact_ratio": 0.0,
            "speech_rate_wpm": 166.81,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0016",
            "duration_s": 8.4,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.43,
            "face_confidence": 0.94,
            "head_pose_yaw_deg": 6.2,
            "head_pose_pitch_deg": 4.3,
            "motion_score": 0.09,
            "bg_complexity": "solid_dark",
            "bg_complexity_score": 0.05,
            "mouth_open_ratio": 0.36,
            "blink_rate_hz": 0.22,
            "audio_snr_db": 27.4,
            "transcript_word_count": 28,
            "transcript_confidence": 0.89,
            "lighting_uniformity": 0.88,
            "occlusion_present": False,
            "environment_tag": "studio",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.91,
            "temporal_flicker": 0.03,
            "bg_entropy": 0.08,
            "eye_contact_ratio": 0.87,
            "speech_rate_wpm": 142.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0017",
            "duration_s": 7.1,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.38,
            "face_confidence": 0.9,
            "head_pose_yaw_deg": 7.8,
            "head_pose_pitch_deg": 5.0,
            "motion_score": 0.12,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.09,
            "mouth_open_ratio": 0.33,
            "blink_rate_hz": 0.21,
            "audio_snr_db": 24.1,
            "transcript_word_count": 24,
            "transcript_confidence": 0.86,
            "lighting_uniformity": 0.8,
            "occlusion_present": False,
            "environment_tag": "office",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.85,
            "temporal_flicker": 0.05,
            "bg_entropy": 0.12,
            "eye_contact_ratio": 0.79,
            "speech_rate_wpm": 128.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0018",
            "duration_s": 8.0,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.25,
            "face_confidence": 0.8,
            "head_pose_yaw_deg": 17.5,
            "head_pose_pitch_deg": 8.2,
            "motion_score": 0.26,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.16,
            "mouth_open_ratio": 0.25,
            "blink_rate_hz": 0.29,
            "audio_snr_db": 19.4,
            "transcript_word_count": 19,
            "transcript_confidence": 0.76,
            "lighting_uniformity": 0.65,
            "occlusion_present": False,
            "environment_tag": "home_office",
            "framing": "front",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.72,
            "temporal_flicker": 0.09,
            "bg_entropy": 0.21,
            "eye_contact_ratio": 0.61,
            "speech_rate_wpm": 115.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0019",
            "duration_s": 3.4,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.16,
            "face_confidence": 0.56,
            "head_pose_yaw_deg": 23.0,
            "head_pose_pitch_deg": 11.2,
            "motion_score": 0.54,
            "bg_complexity": "busy_room",
            "bg_complexity_score": 0.45,
            "mouth_open_ratio": 0.15,
            "blink_rate_hz": 0.38,
            "audio_snr_db": 11.0,
            "transcript_word_count": 8,
            "transcript_confidence": 0.44,
            "lighting_uniformity": 0.38,
            "occlusion_present": True,
            "environment_tag": "corridor",
            "framing": "offgaze",
            "expected_label": "REJECT",
            "sharpness_score": 0.41,
            "temporal_flicker": 0.22,
            "bg_entropy": 0.55,
            "eye_contact_ratio": 0.18,
            "speech_rate_wpm": 78.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0020",
            "duration_s": 5.0,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.18,
            "face_confidence": 0.63,
            "head_pose_yaw_deg": 25.5,
            "head_pose_pitch_deg": 12.4,
            "motion_score": 0.47,
            "bg_complexity": "busy_indoor",
            "bg_complexity_score": 0.42,
            "mouth_open_ratio": 0.17,
            "blink_rate_hz": 0.35,
            "audio_snr_db": 13.1,
            "transcript_word_count": 10,
            "transcript_confidence": 0.51,
            "lighting_uniformity": 0.42,
            "occlusion_present": False,
            "environment_tag": "street_interview",
            "framing": "left",
            "expected_label": "REJECT",
            "sharpness_score": 0.48,
            "temporal_flicker": 0.18,
            "bg_entropy": 0.47,
            "eye_contact_ratio": 0.29,
            "speech_rate_wpm": 92.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0021",
            "duration_s": 9.2,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.41,
            "face_confidence": 0.93,
            "head_pose_yaw_deg": 4.7,
            "head_pose_pitch_deg": 3.1,
            "motion_score": 0.07,
            "bg_complexity": "solid_dark",
            "bg_complexity_score": 0.04,
            "mouth_open_ratio": 0.38,
            "blink_rate_hz": 0.2,
            "audio_snr_db": 29.2,
            "transcript_word_count": 31,
            "transcript_confidence": 0.92,
            "lighting_uniformity": 0.91,
            "occlusion_present": False,
            "environment_tag": "studio",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.94,
            "temporal_flicker": 0.02,
            "bg_entropy": 0.06,
            "eye_contact_ratio": 0.91,
            "speech_rate_wpm": 148.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0022",
            "duration_s": 6.8,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.26,
            "face_confidence": 0.78,
            "head_pose_yaw_deg": 16.3,
            "head_pose_pitch_deg": 7.9,
            "motion_score": 0.28,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.17,
            "mouth_open_ratio": 0.27,
            "blink_rate_hz": 0.28,
            "audio_snr_db": 18.8,
            "transcript_word_count": 18,
            "transcript_confidence": 0.74,
            "lighting_uniformity": 0.63,
            "occlusion_present": False,
            "environment_tag": "living_room",
            "framing": "left",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.68,
            "temporal_flicker": 0.11,
            "bg_entropy": 0.24,
            "eye_contact_ratio": 0.55,
            "speech_rate_wpm": 108.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0023",
            "duration_s": 4.1,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.14,
            "face_confidence": 0.52,
            "head_pose_yaw_deg": 28.1,
            "head_pose_pitch_deg": 14.0,
            "motion_score": 0.58,
            "bg_complexity": "outdoor_street",
            "bg_complexity_score": 0.51,
            "mouth_open_ratio": 0.12,
            "blink_rate_hz": 0.41,
            "audio_snr_db": 9.5,
            "transcript_word_count": 6,
            "transcript_confidence": 0.39,
            "lighting_uniformity": 0.33,
            "occlusion_present": True,
            "environment_tag": "outdoor",
            "framing": "offgaze",
            "expected_label": "REJECT",
            "sharpness_score": 0.35,
            "temporal_flicker": 0.28,
            "bg_entropy": 0.62,
            "eye_contact_ratio": 0.12,
            "speech_rate_wpm": 65.0,
            "difficulty": "easy",
        },
        {
            "clip_id": "clip_0040",
            "duration_s": 11.0,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.35,
            "face_confidence": 0.95,
            "head_pose_yaw_deg": 10.0,
            "head_pose_pitch_deg": 3.3,
            "motion_score": 0.05,
            "bg_complexity": "solid_dark",
            "bg_complexity_score": 0.1,
            "mouth_open_ratio": 0.24,
            "blink_rate_hz": 0.23,
            "audio_snr_db": 28.5,
            "transcript_word_count": 14,
            "transcript_confidence": 0.88,
            "lighting_uniformity": 0.92,
            "occlusion_present": False,
            "environment_tag": "kitchen",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.9,
            "temporal_flicker": 0.07,
            "bg_entropy": 0.07,
            "eye_contact_ratio": 0.8,
            "speech_rate_wpm": 128.0,
        },
        {
            "clip_id": "clip_0041",
            "duration_s": 6.4,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.35,
            "face_confidence": 0.92,
            "head_pose_yaw_deg": 10.0,
            "head_pose_pitch_deg": 8.6,
            "motion_score": 0.08,
            "bg_complexity": "office",
            "bg_complexity_score": 0.1,
            "mouth_open_ratio": 0.13,
            "blink_rate_hz": 0.23,
            "audio_snr_db": 26.2,
            "transcript_word_count": 42,
            "transcript_confidence": 0.84,
            "lighting_uniformity": 0.85,
            "occlusion_present": False,
            "environment_tag": "library",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.9,
            "temporal_flicker": 0.05,
            "bg_entropy": 0.1,
            "eye_contact_ratio": 0.8,
            "speech_rate_wpm": 188.0,
        },
        {
            "clip_id": "clip_0042",
            "duration_s": 7.7,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.35,
            "face_confidence": 0.88,
            "head_pose_yaw_deg": 10.0,
            "head_pose_pitch_deg": 4.7,
            "motion_score": 0.15,
            "bg_complexity": "office",
            "bg_complexity_score": 0.1,
            "mouth_open_ratio": 0.53,
            "blink_rate_hz": 0.26,
            "audio_snr_db": 22.4,
            "transcript_word_count": 13,
            "transcript_confidence": 0.84,
            "lighting_uniformity": 0.78,
            "occlusion_present": False,
            "environment_tag": "gym",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.9,
            "temporal_flicker": 0.04,
            "bg_entropy": 0.11,
            "eye_contact_ratio": 0.8,
            "speech_rate_wpm": 107.0,
        },
        {
            "clip_id": "clip_0043",
            "duration_s": 9.9,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.35,
            "face_confidence": 0.91,
            "head_pose_yaw_deg": 10.0,
            "head_pose_pitch_deg": 13.7,
            "motion_score": 0.12,
            "bg_complexity": "simple_room",
            "bg_complexity_score": 0.1,
            "mouth_open_ratio": 0.28,
            "blink_rate_hz": 0.31,
            "audio_snr_db": 24.8,
            "transcript_word_count": 48,
            "transcript_confidence": 0.87,
            "lighting_uniformity": 0.81,
            "occlusion_present": False,
            "environment_tag": "park",
            "framing": "front",
            "expected_label": "KEEP",
            "sharpness_score": 0.9,
            "temporal_flicker": 0.07,
            "bg_entropy": 0.14,
            "eye_contact_ratio": 0.8,
            "speech_rate_wpm": 166.0,
        },
        {
            "clip_id": "clip_0044",
            "duration_s": 12.5,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.22,
            "face_confidence": 0.72,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 13.8,
            "motion_score": 0.35,
            "bg_complexity": "busy_indoor",
            "bg_complexity_score": 0.35,
            "mouth_open_ratio": 0.49,
            "blink_rate_hz": 0.39,
            "audio_snr_db": 16.5,
            "transcript_word_count": 32,
            "transcript_confidence": 0.65,
            "lighting_uniformity": 0.55,
            "occlusion_present": False,
            "environment_tag": "cafe",
            "framing": "front",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.5,
            "temporal_flicker": 0.14,
            "bg_entropy": 0.27,
            "eye_contact_ratio": 0.4,
            "speech_rate_wpm": 121.0,
        },
        {
            "clip_id": "clip_0045",
            "duration_s": 6.9,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.22,
            "face_confidence": 0.79,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 13.3,
            "motion_score": 0.32,
            "bg_complexity": "busy_indoor",
            "bg_complexity_score": 0.35,
            "mouth_open_ratio": 0.4,
            "blink_rate_hz": 0.33,
            "audio_snr_db": 14.8,
            "transcript_word_count": 18,
            "transcript_confidence": 0.71,
            "lighting_uniformity": 0.62,
            "occlusion_present": False,
            "environment_tag": "bus_stop",
            "framing": "offgaze",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.5,
            "temporal_flicker": 0.1,
            "bg_entropy": 0.29,
            "eye_contact_ratio": 0.4,
            "speech_rate_wpm": 108.0,
        },
        {
            "clip_id": "clip_0046",
            "duration_s": 10.1,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.22,
            "face_confidence": 0.75,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 10.5,
            "motion_score": 0.29,
            "bg_complexity": "busy_indoor",
            "bg_complexity_score": 0.35,
            "mouth_open_ratio": 0.48,
            "blink_rate_hz": 0.37,
            "audio_snr_db": 19.2,
            "transcript_word_count": 22,
            "transcript_confidence": 0.78,
            "lighting_uniformity": 0.58,
            "occlusion_present": False,
            "environment_tag": "car_interior",
            "framing": "right",
            "expected_label": "BORDERLINE",
            "sharpness_score": 0.5,
            "temporal_flicker": 0.16,
            "bg_entropy": 0.28,
            "eye_contact_ratio": 0.4,
            "speech_rate_wpm": 81.0,
        },
        {
            "clip_id": "clip_0047",
            "duration_s": 7.5,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.15,
            "face_confidence": 0.45,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 10.2,
            "motion_score": 0.65,
            "bg_complexity": "crowded_event",
            "bg_complexity_score": 0.35,
            "mouth_open_ratio": 0.29,
            "blink_rate_hz": 0.4,
            "audio_snr_db": 8.2,
            "transcript_word_count": 37,
            "transcript_confidence": 0.43,
            "lighting_uniformity": 0.32,
            "occlusion_present": False,
            "environment_tag": "night_club",
            "framing": "offgaze",
            "expected_label": "REJECT",
            "sharpness_score": 0.5,
            "temporal_flicker": 0.15,
            "bg_entropy": 0.57,
            "eye_contact_ratio": 0.4,
            "speech_rate_wpm": 144.0,
        },
        {
            "clip_id": "clip_0048",
            "duration_s": 13.9,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.15,
            "face_confidence": 0.52,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 7.4,
            "motion_score": 0.58,
            "bg_complexity": "crowded_event",
            "bg_complexity_score": 0.35,
            "mouth_open_ratio": 0.21,
            "blink_rate_hz": 0.42,
            "audio_snr_db": 6.4,
            "transcript_word_count": 40,
            "transcript_confidence": 0.55,
            "lighting_uniformity": 0.41,
            "occlusion_present": False,
            "environment_tag": "windy_beach",
            "framing": "front",
            "expected_label": "REJECT",
            "sharpness_score": 0.5,
            "temporal_flicker": 0.26,
            "bg_entropy": 0.61,
            "eye_contact_ratio": 0.4,
            "speech_rate_wpm": 92.0,
        },
        {
            "clip_id": "clip_0049",
            "duration_s": 10.6,
            "fps": 25,
            "resolution": "1280x720",
            "face_area_ratio": 0.15,
            "face_confidence": 0.38,
            "head_pose_yaw_deg": 25.0,
            "head_pose_pitch_deg": 7.2,
            "motion_score": 0.42,
            "bg_complexity": "outdoor_street",
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