Question: who produced the music for the greatest showman
[{'answer': 'Greg Wells', 'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 39, 'start_character': 61, 'end_paragraph_id': 39, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Music.:Soundtrack.\n'}]}, {'answer': 'Justin Paul', 'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 1, 'start_character': 299, 'end_paragraph_id': 1, 'end_character': 310, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Benj Pasek', 'provenance': [{'wikipedia_id': '44435434', 'title': 'The Greatest Showman', 'start_paragraph_id': 1, 'start_character': 284, 'end_paragraph_id': 1, 'end_character': 294, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]