Question: when did the stock market start in the united states
[{'answer': '1792', 'provenance': [{'wikipedia_id': '21560', 'title': 'New York Stock Exchange', 'start_paragraph_id': 4, 'start_character': 326, 'end_paragraph_id': 4, 'end_character': 330, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '21560', 'title': 'New York Stock Exchange', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 921, 'bleu_score': 0.9700126434602441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11833302784437557497}, 'section': 'Section::::History.\n'}]}]