Question: when was grand central station new york built
[{'answer': '1871', 'provenance': [{'wikipedia_id': '301591', 'title': 'Grand Central Terminal', 'start_paragraph_id': 3, 'start_character': 314, 'end_paragraph_id': 3, 'end_character': 318, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]