Question: who discovered that the earth rotates on an axis
[{'answer': 'Aryabhata', 'provenance': [{'wikipedia_id': '4396171', 'title': "Earth's rotation", 'start_paragraph_id': 8, 'start_character': 33, 'end_paragraph_id': 8, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '4396171', 'title': "Earth's rotation", 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 438, 'bleu_score': 0.9451526628827591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10068928042304466956}, 'section': 'Section::::History.\n'}]}]