Task: Question Answering
Input (English): Passage: In 1972–73 Indiana Hoosiers mens basketball team, Knights second year as coach, Indiana won the Big Ten championship and reached the Final Four, but lost to 1972–73 UCLA Bruins mens basketball team. The following season, 1973–74, Indiana once again captured a Big Ten title. In the two following seasons, 1974–75 Indiana Hoosiers mens basketball team and 1975–76 Indiana Hoosiers mens basketball team, the Hoosiers were undefeated in the regular season and won 37-consecutive Big Ten games, including two more Big Ten championships. The 1974–75 Indiana Hoosiers mens basketball team Hoosiers swept the entire Big Ten by an average of 22.8 points per game. However, in an 83–82 win against Purdue Boilermakers mens basketball they lost consensus All-American forward Scott May to a broken left arm. With Mays injury keeping him to 7 minutes of play, the No. 1 Hoosiers lost to 1974–75 Kentucky Wildcats mens basketball team 92–90 in the 1975 NCAA Mens Division I Basketball Tournament. The Hoosiers were so dominant that four starters – Scott May, Steve Green (basketball), Kent Benson and Quinn Buckner – would make the five-man All-Big Ten team. The following season, 1975–76 Indiana Hoosiers mens basketball team, the Hoosiers went the entire season and 1976 NCAA Mens Division I Basketball Tournament without a single loss, beating 1975–76 Michigan Wolverines mens basketball team 86–68 in the title game. Immediately after the game, Knight lamented that "it should have been two." The 1976 Hoosiers remains the last undefeated NCAA Division I mens basketball team. Through these two seasons, Knights teams were undefeated in the regular season, including a perfect 37–0 record in Big Ten games on their way to their third and fourth conference titles in a row. Behind the play of Mike Woodson, Indiana won the 1979 National Invitation Tournament championship. 
Question: How many years had Knight been coaching Indiana when they won the Big Ten championship and reached the FInal FOur? 
Answer type: Number 
Output (English): 2.