Question: when did the chicago bulls became a team
[{'answer': 'January 16 , 1966', 'provenance': [{'wikipedia_id': '72866', 'title': 'Chicago Bulls', 'start_paragraph_id': 8, 'start_character': 3, 'end_paragraph_id': 8, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:Team creation.\n'}]}, {'provenance': [{'wikipedia_id': '72866', 'title': 'Chicago Bulls', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 391, 'bleu_score': 0.968982777549629, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13226086772497412384}, 'section': 'Section::::Abstract.'}]}]