Question: when did the stock market crash in 2008
[{'answer': 'On September 16 , 2008', 'provenance': [{'wikipedia_id': '63074', 'title': 'Stock market crash', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Major crashes in the United States.:Crash of 2008–2009.\n'}]}, {'provenance': [{'wikipedia_id': '63074', 'title': 'Stock market crash', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 893, 'bleu_score': 0.985764216565234, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3402317385608951531}, 'section': 'Section::::Major crashes in the United States.:Crash of 2008–2009.\n'}]}]