Question: when did the space shuttle columbia blow up
[{'answer': 'February 1 , 2003', 'provenance': [{'wikipedia_id': '177541', 'title': 'Space Shuttle Columbia disaster', 'start_paragraph_id': 1, 'start_character': 3, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]