Question: when was a pair of silk stockings written
[{'answer': '1897', 'provenance': [{'wikipedia_id': '39239022', 'title': 'A Pair of Silk Stockings', 'start_paragraph_id': 1, 'start_character': 81, 'end_paragraph_id': 1, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39239022', 'title': 'A Pair of Silk Stockings', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 189, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2293227464860623918}, 'section': 'Section::::Abstract.'}]}]