Question: who wrote the music for how to train your dragon
[{'answer': 'John Powell', 'provenance': [{'wikipedia_id': '18638934', 'title': 'John Powell (film composer)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18638934', 'title': 'John Powell (film composer)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 543, 'bleu_score': 0.792732844283712, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6212875604407233114}, 'section': 'Section::::Abstract.'}]}]