Question: who calculated the value of pi in india
[{'answer': 'Aryabhata', 'provenance': [{'wikipedia_id': '23601', 'title': 'Pi', 'start_paragraph_id': 54, 'start_character': 22, 'end_paragraph_id': 54, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::History.:Polygon approximation era.\n'}]}, {'provenance': [{'wikipedia_id': '23601', 'title': 'Pi', 'start_paragraph_id': 54, 'start_character': 0, 'end_paragraph_id': 54, 'end_character': 226, 'bleu_score': 0.844012060487056, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8705324065954599932}, 'section': 'Section::::History.:Polygon approximation era.\n'}]}]