Question: when did nc state win the national championship
[{'answer': '1974 and 1983', 'provenance': [{'wikipedia_id': '7492045', 'title': "NC State Wolfpack men's basketball", 'start_paragraph_id': 2, 'start_character': 251, 'end_paragraph_id': 2, 'end_character': 264, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7492045', 'title': "NC State Wolfpack men's basketball", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 341, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3040358480830492588}, 'section': 'Section::::Abstract.'}]}]