Question: where did the formula for area of a circle come from
[{'answer': 'Archimedes', 'provenance': [{'wikipedia_id': '1896782', 'title': 'Area of a circle', 'start_paragraph_id': 2, 'start_character': 59, 'end_paragraph_id': 2, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1896782', 'title': 'Area of a circle', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 938, 'bleu_score': 0.9585186469263751, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6911001759996623872}, 'section': 'Section::::History.\n'}]}]