Question: who wrote the poem mary had a little lamb
[{'answer': 'Sarah Josepha Hale', 'provenance': [{'wikipedia_id': '346594', 'title': 'Mary Had a Little Lamb', 'start_paragraph_id': 3, 'start_character': 102, 'end_paragraph_id': 3, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'provenance': [{'wikipedia_id': '346594', 'title': 'Mary Had a Little Lamb', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 185, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3203385825309402770}, 'section': 'Section::::Background.\n'}]}]