Question: who wrote the theme music for star wars
[{'answer': 'John Towner Williams', 'provenance': [{'wikipedia_id': '154554', 'title': 'John Williams', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '154554', 'title': 'John Williams', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1197, 'bleu_score': 0.672682718333625, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7838649558522912937}, 'section': 'Section::::Abstract.'}]}]