Question: who won entertainer of the year at the cma awards
[{'answer': 'Garth Brooks', 'provenance': [{'wikipedia_id': '43051030', 'title': 'Country Music Association Award for Entertainer of the Year', 'start_paragraph_id': 1, 'start_character': 146, 'end_paragraph_id': 1, 'end_character': 158, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]