Question: who wrote the music for 7 brides for 7 brothers
[{'answer': 'Gene de Paul', 'provenance': [{'wikipedia_id': '10349463', 'title': 'Seven Brides for Seven Brothers (musical)', 'start_paragraph_id': 1, 'start_character': 102, 'end_paragraph_id': 1, 'end_character': 114, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Al Kasha', 'provenance': [{'wikipedia_id': '10349463', 'title': 'Seven Brides for Seven Brothers (musical)', 'start_paragraph_id': 1, 'start_character': 116, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Joel Hirschhorn', 'provenance': [{'wikipedia_id': '10349463', 'title': 'Seven Brides for Seven Brothers (musical)', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10349463', 'title': 'Seven Brides for Seven Brothers (musical)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 427, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7098895065254389368}, 'section': 'Section::::Abstract.'}]}]