Question: who won the college basketball national championship in 2017
[{'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.'}]}]