Question: who composed the nutcracker suite for the christmas themed ballet the nutcracker
[{'answer': 'Tchaikovsky', 'provenance': [{'wikipedia_id': '284925', 'title': 'The Nutcracker', 'start_paragraph_id': 1, 'start_character': 160, 'end_paragraph_id': 1, 'end_character': 171, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '284925', 'title': 'The Nutcracker', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 448, 'bleu_score': 0.9155272930874561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3297351285895613431}, 'section': 'Section::::Abstract.'}]}]