Question: Who is current coach of the Hawkeyes at Iowa University, and a former NFL assistant coach?

Context paragraphs:
Jeff Horner: Jeff Horner (born August 1, 1983) is an American former basketball player and current assistant coach for the University of North Dakota.  He is best known as a point guard for the University of Iowa Hawkeyes basketball team.  Horner currently holds the University of Iowa career three point record at 232 shots made.  Horner was born in Mason City, Iowa.  His father Bob Horner was Mason City High School varsity basketball coach.  Horner made a verbal commitment to the University of Iowa while in the ninth grade.  Horner was the head varsity basketball coach at Valley High School in West Des Moines, Iowa from 2010-2014.  Horner's sister Kristin played basketball for Drake University.

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.

Russ Purnell: Russ Purnell (born June 12, 1948) is an American football coach.  He has served for 26 seasons as an assistant coach in the NFL, mainly coordinating the special teams units.  He is one of only 21 NFL assistant coaches who have won at least one Super Bowl championship with two different teams (Baltimore and Indianapolis).  He was also the special teams coordinator for the Omaha Nighthawks of the United Football League (UFL).

Tom Walsh (American football): Tom Walsh (born April 16, 1949) is a former NFL assistant coach, most recently with the Oakland Raiders.  He was hired in February, 2006, as offensive coordinator by head coach Art Shell but demoted before the end of the 2006 season and replaced by John Shoop.  After leaving the Raiders, Walsh stated that Randy Moss, whom he coached in Oakland, was "a player whose skills are diminishing."  Moss went on to break the single season touchdown reception record in 2007 after being traded to the New England Patriots.

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.

Leonard Raffensperger: Leonard Raffensperger (November 6, 1903 – September 19, 1974) was an American football and basketball player and coach.  He served as the head football coach at the University of Iowa for two seasons in 1950 and 1951, compiling a record of 5–10–3.  Raffensperger played football and basketball at Iowa and then served as a high school football coach for 21 years before joining the Iowa Hawkeyes football staff as an assistant coach in 1948.

Mike Knoll: Mike Knoll (born October 1, 1951) is a former American football coach.  He served as the head football coach at New Mexico State University from 1986 to 1989 and at Upper Iowa University from 2005 to 2008, compiling a career college football coaching record of 15–73.  Knoll also worked as an assistant coach at Missouri Western State University, the University of Tulsa, Iowa State University, the University of Miami, Northwestern University, Bacone College, and Northeastern State University.

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.

Tom Fears: Thomas Jesse Fears (December 3, 1922 – January 4, 2000) was an American football split end for the Los Angeles Rams in the National Football League (NFL), playing nine seasons from 1948 to 1956.  He was later an NFL assistant coach and head coach of the New Orleans Saints, and is in the Pro Football Hall of Fame.  He played college football for the UCLA Bruins football team and is a member of the College Football Hall of Fame.

John Trask (soccer): John Trask is the head men's soccer coach at the University of Wisconsin–Madison.  He was announced head soccer coach on January 20, 2010.  From 2005 to 2009, he served as the head men's soccer coach at UIC.  At UIC, his teams advanced to the NCAA Tournament in 2006, 2007, and 2008.  From 2000 to 2004, he was a top assistant coach in Major League Soccer (MLS).  In 2004, he was an assistant coach for Dallas Burn, and from 2002 to 2003, he was an assistant coach for D.C. United.  From 2000 to 2001, he was an assistant coach with the Miami Fusion.  From 1993 to 1999, he was an assistant coach at Indiana University.  Trask was tutored by USSF Hall of Fame Coach Jerry Yeagley and former NASL great Ray Hudson.

Supporting paragraphs: Iowa Hawkeyes football Kirk Ferentz
Answer: Kirk Ferentz