Question: who wrote the theme music for schindler's list
[{'answer': 'John Williams', 'provenance': [{'wikipedia_id': '10375212', 'title': "Schindler's List (soundtrack)", 'start_paragraph_id': 1, 'start_character': 134, 'end_paragraph_id': 1, 'end_character': 147, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]