Question: who won the ncaa men's tournament last year
[{'answer': 'North Carolina', 'provenance': [{'wikipedia_id': '44437928', 'title': "2017 NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 2, 'start_character': 19, 'end_paragraph_id': 2, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44437928', 'title': "2017 NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 267, 'bleu_score': 0.8661072626070151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6967850808827162709}, 'section': 'Section::::Abstract.'}]}]