Question: when did the okc thunder come to oklahoma
[{'answer': 'September 3 , 2008', 'provenance': [{'wikipedia_id': '18256220', 'title': 'Oklahoma City Thunder', 'start_paragraph_id': 131, 'start_character': 55, 'end_paragraph_id': 131, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Logos and uniforms.\n'}]}, {'provenance': [{'wikipedia_id': '18256220', 'title': 'Oklahoma City Thunder', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 986, 'bleu_score': 0.988200073497952, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10960517520522911162}, 'section': 'Section::::Franchise history.:2008–2009: Move to Oklahoma City and inaugural season.\n'}]}]