Question: what instrument is used for the harry potter theme song
[{'answer': 'celesta', 'provenance': [{'wikipedia_id': '52875', 'title': 'Celesta', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52875', 'title': 'Celesta', 'start_paragraph_id': 41, 'start_character': 0, 'end_paragraph_id': 41, 'end_character': 693, 'bleu_score': 0.982060959997838, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7909469394920979863}, 'section': 'Section::::Use in other musical genres.:Soundtrack.\n'}]}]