Question: who wrote the poem stopping by woods on a snowy evening
[{'answer': 'Robert Frost', 'provenance': [{'wikipedia_id': '3377861', 'title': 'Stopping by Woods on a Snowy Evening', 'start_paragraph_id': 1, 'start_character': 68, 'end_paragraph_id': 1, 'end_character': 80, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3377861', 'title': 'Stopping by Woods on a Snowy Evening', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 280, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15480866726189129618}, 'section': 'Section::::Abstract.'}]}]