Question: who wrote the song walking in the air
[{'answer': 'Howard Blake', 'provenance': [{'wikipedia_id': '1705162', 'title': 'Walking in the Air', 'start_paragraph_id': 1, 'start_character': 42, 'end_paragraph_id': 1, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1705162', 'title': 'Walking in the Air', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 792, 'bleu_score': 0.969607525075692, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3208531321045310773}, 'section': 'Section::::Abstract.'}]}]