Question: In what years did the coach of the 2001 Iowa Hawkeyes play college football?

Context paragraphs:
Kirk Ferentz: Kirk James Ferentz (born August 1, 1955) is the head football coach at the University of Iowa, a position he has held since the 1999 season.  From 1990 to 1992, Ferentz was the head football coach at the University of Maine, where had a record of 12-21.  He has also served as an assistant coach with the Cleveland Browns and Baltimore Ravens of the National Football League (NFL).  Ferentz played college football as a linebacker at the University of Connecticut from 1974 to 1976.

1889 Iowa Hawkeyes football team: The 1889 Iowa Hawkeyes football team represented the University of Iowa during the 1889 college football season.  On September 26, 1889, Martin Sampson, who would later score the first touchdown in school history, led a meeting regarding the organization of an S.U.I. football team.  It was this suggestion that earned Sampson the title of coach and captain of the team.  In the following days, Iowa sent out a challenge to any team in the state of Iowa for a game of football.  The one team to accept Iowa's challenge: Iowa College.  The Hawkeyes were no strangers to the Pioneers, as the two schools had met on the baseball diamond in the 20 years before.  The game date was set for November 16, and the preparations for the game began.

1897 Iowa Hawkeyes football team: The 1897 Iowa Hawkeyes football team represented the University of Iowa during the 1897 college football season.  The team was coached by Otto Wagonhurst, the last coach in Iowa Hawkeyes football history to coach for only one season.  The next year, Iowa hired Alden Knipe as the team's head coach.

Ken O'Keefe: Ken O'Keefe (born August 18, 1953) is an American football coach and former player.  He is currently the Quarterbacks coach for the Iowa Hawkeyes football team, a position he assumed in January 2017.  O'Keefe has previously served as the offensive coordinator for the Iowa Hawkeyes football team from 1999 to 2011.  He was the head football coach at the Allegheny College from 1990 to 1997 and at Fordham University in 1998, compiling a career college football record of 83–17–1.  In O'Keefe's first season at Allegheny, in 1990, his team went 13–0–1 and won the NCAA Division III National Football Championship.

Iowa Hawkeyes football: The Iowa Hawkeyes football team represents the University of Iowa in college football.  The Hawkeyes compete in the West division of the Big Ten Conference.  They have been a member of the Big Ten since 1899, and are currently a Division I Football Bowl Subdivision (FBS) member of the NCAA.  The Hawkeyes play their home games in Iowa City, Iowa at Kinnick Stadium, with a capacity of 70,585.  The Hawkeyes are currently coached by Kirk Ferentz, who is in his 19th season as the head coach and is the longest current tenured head coach in NCAA Division I FBS.

1988 Iowa Hawkeyes football team: The 1988 Iowa Hawkeyes football team represented the University of Iowa in the 1988 NCAA Division I-A football season.  The Hawkeyes played their home games at Kinnick Stadium and were led by legendary coach Hayden Fry.  The 1988 season marked the 100th season of Iowa Hawkeyes football.

2001 Iowa Hawkeyes football team: The 2001 Iowa Hawkeyes football team represented the University of Iowa and the Iowa Hawkeyes football program during the 2001 NCAA Division I-A football season.  Coached by Kirk Ferentz, the Hawkeyes played their home games at Kinnick Stadium in Iowa City, Iowa.

1892 Iowa Hawkeyes football team: The 1892 Iowa Hawkeyes football team represented the University of Iowa during the 1892 college football season.  The season involved many 'firsts' for the Hawkeyes.  After going three years without a conference, Iowa joined the Western Interstate University Football Association, along with Nebraska, Missouri, and Kansas.  But in another first, Edward A. Dalton, formerly of Princeton University, was hired as Iowa's head coach.  Although he was only hired for 10 days prior to the season, he is recognized as Iowa's first head coach.

1890 Iowa Hawkeyes football team: The 1890 Iowa Hawkeyes football team represented the University of Iowa during the 1890 college football season.  Following Iowa's inaugural season in 1889, two games were scheduled for the Hawkeyes to play in 1890.  On October 18, the Hawkeyes played Iowa College in Iowa City, only to lose to the Pioneers for the second time in two games.  It was this loss that triggered a dispute amongst people within the University.  In an attempt to prove that the best football talent was not on the team, the S.U.I. Medics challenged the varsity squad to a game.  Confident, the varsity squad accepted, and lost, 22–10.  But the loss did not keep Iowa from challenging Iowa Wesleyan, who accepted, under the terms that the game be played in Mount Pleasant, Iowa.

2009 Iowa Hawkeyes football team: The 2009 Iowa Hawkeyes football team represented the University of Iowa and the Iowa Hawkeyes athletic program during the 2009 NCAA Division I FBS football season.  The team played its home games at Kinnick Stadium in Iowa City, Iowa.  2009 marked Kirk Ferentz's 11th year as head coach of Iowa.  The Hawkeyes finished the season as the 2010 Orange Bowl Champions.

Supporting paragraphs: 2001 Iowa Hawkeyes football team Kirk Ferentz
Answer: from 1974 to 1976