Question: who wrote the music for the world at war
[{'answer': 'Carl Davis', 'provenance': [{'wikipedia_id': '229612', 'title': 'The World at War', 'start_paragraph_id': 1, 'start_character': 340, 'end_paragraph_id': 1, 'end_character': 350, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '229612', 'title': 'The World at War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 468, 'bleu_score': 0.7796534638652821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15906751058236071339}, 'section': 'Section::::Abstract.'}]}]