Question: area of the brain that regulates sleep-wake cycles
[{'answer': 'hypothalamus', 'provenance': [{'wikipedia_id': '36563803', 'title': 'Neuroscience of sleep', 'start_paragraph_id': 64, 'start_character': 119, 'end_paragraph_id': 64, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Sleep regulation.:Sleep onset.\n'}]}, {'provenance': [{'wikipedia_id': '36563803', 'title': 'Neuroscience of sleep', 'start_paragraph_id': 68, 'start_character': 0, 'end_paragraph_id': 68, 'end_character': 861, 'bleu_score': 0.9858648355536391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10229934918759134230}, 'section': 'Section::::Sleep regulation.:Models of sleep regulation.\n'}]}]