Question: when was the last time michigan basketball won the championship
[{'answer': '1989'}, {'provenance': [{'wikipedia_id': '14291424', 'title': "Michigan Wolverines men's basketball", 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10972690323079768709}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '22526195', 'title': "198889 Michigan Wolverines men's basketball team", 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ["The 198889 Michigan Wolverines men's basketball team represented the University of Michigan in intercollegiate college basketball during the 198889 season. The head coach was Bill Frieder, who was dismissed before the 1989 NCAA Men's Division I Basketball Tournament and replaced by assistant Steve Fisher. They played their home games at Crisler Arena in Ann Arbor, Michigan as members of the Big Ten Conference. They finished the season 307, 126 in Big Ten play to finish in third place.", "The 198889 Michigan Wolverines men's basketball team represented the University of Michigan in intercollegiate college basketball during the 198889 season. The head coach was Bill Frieder, who was dismissed before the 1989 NCAA Men's Division I Basketball Tournament and replaced by assistant Steve Fisher. They played their home games at Crisler Arena in Ann Arbor, Michigan as members of the Big Ten Conference. They finished the season 307, 126 in Big Ten play to finish in third place. The Wolverines received an at-large bid to the NCAA Tournament as the No. 3 seed in the Southeast region. They defeated Xavier and South Alabama to advance to the Sweet Sixteen. In the Sweet Sixteen, they defeated No. 5-ranked North Carolina and Virginia to advance to the Final Four. In the Final Four, they defeated fellow Big Ten member and No. 3-ranked Illinois to advance to the National Championship game. There they defeated No. 11 Seton Hall in overtime to win the school's first and, to date, only National Championship."]}}]}, {'provenance': [{'wikipedia_id': '45671104', 'title': "List of Michigan Wolverines men's basketball head coaches", 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['first and only head coach to have led the team to an NCAA Tournament championship, doing so in 1989', "The men's team has had 17 head coaches in its history. The team has played in 2,538 games over 103 seasons of collegiate play from the 190809 season to the 201819 season (excluding 1910 to 1917, when the Wolverines did not play due to low attendance and lack of interest), compiling a record of 1,5041,041 (.591). Steve Fisher is the first and only head coach to have led the team to an NCAA Tournament championship, doing so in 1989. He also led the team to six other NCAA Tournament appearances, including two runner-up finishes in 1992 and 1993, but the\rhighlight sentence(s) containing evidence, not only the answer", "The men's team has had 17 head coaches in its history. The team has played in 2,538 games over 103 seasons of collegiate play from the 190809 season to the 201819 season (excluding 1910 to 1917, when the Wolverines did not play due to low attendance and lack of interest), compiling a record of 1,5041,041 (.591). Steve Fisher is the first and only head coach to have led the team to an NCAA Tournament championship, doing so in 1989. He also led the team to six other NCAA Tournament appearances, including two runner-up finishes in 1992 and 1993, but the"]}}]}]