Question: who measured the earth with sticks and shadows
[{'answer': 'Eratosthenes', 'provenance': [{'wikipedia_id': '46117', 'title': 'Eratosthenes', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46117', 'title': 'Eratosthenes', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 956, 'bleu_score': 0.9307493213781151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6164526809465196655}, 'section': "Section::::Measurement of the Earth's circumference.\n"}]}]