Question: who won the ncaa basketball championship in 1990
[{'answer': 'UNLV', 'provenance': [{'wikipedia_id': '4381100', 'title': "1990 NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 4, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4381100', 'title': "1990 NCAA Division I Men's Basketball Tournament", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 438, 'bleu_score': 0.8958217065845671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14258479755412554375}, 'section': 'Section::::Abstract.'}]}]