Question: when did the subway open in new york
[{'answer': '1904', 'provenance': [{'wikipedia_id': '285510', 'title': 'New York City Subway', 'start_paragraph_id': 1, 'start_character': 224, 'end_paragraph_id': 1, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'October 27 , 1904', 'provenance': [{'wikipedia_id': '285510', 'title': 'New York City Subway', 'start_paragraph_id': 10, 'start_character': 247, 'end_paragraph_id': 10, 'end_character': 264, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '285510', 'title': 'New York City Subway', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 456, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1476336301524712231}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '285510', 'title': 'New York City Subway', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 791, 'bleu_score': 0.9861583350689591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1476336301524712231}, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '10257060', 'title': 'Early history of the IRT subway', 'section': 'Section::::History.:Opening.\n', 'start_paragraph_id': 23, 'end_paragraph_id': 23, 'meta': {'evidence_span': ['The excavated Manhattan schist was also used to construct buildings for the City College of New York. Operation of the subway began on October 27, 1904, with the opening of all stations from City Hall to 145th Street on the West Side Branch', 'The excavated Manhattan schist was also used to construct buildings for the City College of New York. Operation of the subway began on October 27, 1904, with the opening of all stations from City Hall to 145th Street on the West Side Branch.', 'York. Operation of the subway began on October 27, 1904']}}]}, {'provenance': [{'wikipedia_id': '285510', 'title': 'New York City Subway', 'section': 'Section::::History.\n', 'start_paragraph_id': 10, 'end_paragraph_id': 10, 'meta': {'evidence_span': ['The first underground line of the subway opened on October 27, 1904, almost 36 years after the opening of the first elevated line in New York City, which became the IRT Ninth Avenue Line.', 'The first underground line of the subway opened on October 27, 1904']}}]}]