Question: who wrote the music for the musical chicago
[{'answer': 'John Kander', 'provenance': [{'wikipedia_id': '213077', 'title': 'Chicago (musical)', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Fred Ebb', 'provenance': [{'wikipedia_id': '213077', 'title': 'Chicago (musical)', 'start_paragraph_id': 1, 'start_character': 102, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '213077', 'title': 'Chicago (musical)', 'start_paragraph_id': 1, 'start_character': 42, 'end_paragraph_id': 1, 'end_character': 427, 'bleu_score': 0.9580314698597541, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4985695567815786953}, 'section': 'Section::::Abstract.'}]}]