Question: when did robert frost wrote stopping by the woods
[{'answer': '1922', 'provenance': [{'wikipedia_id': '3377861', 'title': 'Stopping by Woods on a Snowy Evening', 'start_paragraph_id': 1, 'start_character': 60, 'end_paragraph_id': 1, 'end_character': 64, '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': 14822993701923849180}, 'section': 'Section::::Abstract.'}]}]