Question: when did the musical hair first come out
[{'answer': 'October 17 , 1967', 'provenance': [{'wikipedia_id': '67898', 'title': 'Hair (musical)', 'start_paragraph_id': 11, 'start_character': 47, 'end_paragraph_id': 11, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::History.:Off-Broadway productions.\n'}]}, {'provenance': [{'wikipedia_id': '67898', 'title': 'Hair (musical)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 916, 'bleu_score': 0.9865312178338931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11496131446502696525}, 'section': 'Section::::Abstract.'}]}]