Question: What sport is Colin Kaepernick, also known as Kaep, known for playing?

full_context: Document 1: Kurt Warner: Kurtis Eugene Warner (born June 22, 1971) is a former American football quarterback, a current part-time TV football analyst, and a philanthropist. He played for three National Football League (NFL) teams: the St. Louis Rams, the New York Giants, and the Arizona Cardinals. He was originally signed by the Green Bay Packers as an undrafted free agent in 1994 after playing college football at Northern Iowa. Warner went on to be considered the best undrafted NFL player of all time, following a 12-year career regarded as one of the greatest stories in NFL history. Warner was inducted into the Pro Football Hall of Fame in 2017, and is the only person inducted into both the Pro Football Hall of Fame and the Arena Football Hall of Fame.
Document 2: Big Kap: Keith Carter (February 26, 1970 – February 3, 2016), also known as Big Kap and The Wardin, was an American hip-hop DJ who was born in New York City and was later based in Atlanta. In 1995, he was a member of hip hop supergroup The Flip Squad. He was well known for the 1999 album "The Tunnel" with Funkmaster Flex, named after the New York nightclub where he was a regular DJ. He died in Mableton, GA late on February 3, 2016 due to a heart attack. He was 45 at the time of his death. According to his road manager Ab Traxx, Keith dealt with diabetes, but he did not believe it was what caused his fatal heart attack. Keith was previously slated to work on a showcase in Atlanta on the day of his death, shortly after his passing, the event became a memorial for Keith.
Document 3: Joe Kapp: Joseph Robert Kapp (born March 19, 1938) is an American former football player, coach, and executive. He played college football as a quarterback at the University of California, Berkeley. Kapp played professionally in the Canadian Football League (CFL) with the Calgary Stampeders and the BC Lions and then in the National Football League (NFL) with the Minnesota Vikings and the Boston Patriots. Kapp returned to his alma mater to serve as head coach of the California Golden Bears from 1982 to 1986. He was the general manager and president of the BC Lions in 1990.
Document 4: Carson Wentz: Carson Wentz (born December 30, 1992) is an American football quarterback for the Philadelphia Eagles of the National Football League (NFL). He played college football at North Dakota State University (NDSU) and was selected by the Eagles with the second overall pick of the 2016 NFL Draft, the highest selection ever for an FCS player.
Document 5: Andrew Luck: Andrew Austen Luck (born September 12, 1989) is an American football quarterback for the Indianapolis Colts of the National Football League (NFL). He played college football at Stanford, where he won the Maxwell Award and Walter Camp Award as college football's player of the year and was twice recognized as an All-American. He was the runner-up for the Heisman Trophy in both 2010 and 2011. He was named the Offensive Player of the Year in the Pac-12 (Pac-10) Conference in both 2010 and 2011. CBS Sports draft analyst Rob Rang called Luck the best prospect he had ever scouted, while the "Kansas City Star" put him in line with LeBron James and Bryce Harper as "the most hyped amateurs in recent sports memory."
Document 6: Kapital Entertainment: Kapital Entertainment is an American independent television production company founded by Aaron Kaplan in 2009. Prior to founding Kapital, Kaplan was the worldwide head of scripted television at William Morris Agency to which he joined in 1991. He exited the company in 2009 after 18 years when WMA was going through the regulatory process to finalize their merger with Endeavor to form WME Entertainment.
Document 7: Aaron Rodgers: Aaron Charles Rodgers (born December 2, 1983) is an American football quarterback for the Green Bay Packers of the National Football League (NFL). Rodgers played college football for California, where he set several career passing records, including lowest single-season and career interception rates. He was selected in the first round (24th overall) of the 2005 NFL Draft by the Packers.
Document 8: Napoleon Kaufman: Napoleon "Nip" Kaufman (born June 7, 1973) is a former American football player and currently an ordained minister and head football coach at Bishop O'Dowd High School in Oakland, California. He is a former NFL running back, playing for the Oakland Raiders for the entirety of his professional football career.
Document 9: Joe Montana: Joseph Clifford Montana Jr. (born June 11, 1956), nicknamed "Joe Cool" and "The Comeback Kid", is a former American football quarterback who played in the National Football League (NFL) for 16 seasons, primarily with the San Francisco 49ers and then with the Kansas City Chiefs for the final two seasons of his NFL career. After winning a college national championship at Notre Dame, Montana started his NFL career in 1979 with San Francisco, where he played for the next 14 seasons.. While a member of the 49ers, Montana started and won four Super Bowls and was the first player ever to have been named Super Bowl Most Valuable Player three times. He also holds Super Bowl career records for most passes without an interception (122 in 4 games) and the all-time highest quarterback rating of 127.8. Montana was elected to the Pro Football Hall of Fame in 2000, his first year of eligibility.
Document 10: Kellen Clemens: Kellen Vincent Clemens (born June 6, 1983) is an American football quarterback for the Los Angeles Chargers of the National Football League (NFL). He was selected by the New York Jets in the second round of the 2006 NFL Draft. He played college football at Oregon.
Document 11: Colin Kaepernick: Colin Rand Kaepernick ( ; born November 3, 1987) is an American football quarterback who is currently a free agent. Kaepernick played college football at the University of Nevada, where he was named the Western Athletic Conference (WAC) Offensive Player of the Year twice and became the only player in NCAA Division I FBS history to amass 10,000 passing yards and 4,000 rushing yards in a career. After graduating, he was selected by the San Francisco 49ers in the second round of the 2011 NFL Draft.
Document 12: Marshall Faulk: Marshall William Faulk (born February 26, 1973) is a former American football player who was a running back in the National Football League (NFL) for twelve seasons. He played college football for San Diego State University, and was a two-time consensus All-American. He was selected by the Indianapolis Colts as the second overall pick in the 1994 NFL Draft, and he also played professionally for the NFL's St. Louis Rams. Faulk is one of only three NFL players (Marcus Allen and Tiki Barber being the others) to reach at least 10,000 rushing yards and 5,000 receiving yards; he is the only one to amass 12,000 yards rushing and 6,000 yards receiving. Faulk was inducted into the Pro Football Hall of Fame in 2011 and the College Football Hall of Fame in 2017. He is currently a pro football analyst for "NFL Total Access", "Thursday Night Football", and "NFL GameDay Morning" on the NFL Network.
Document 13: Get Cape. Wear Cape. Fly: Sam Duckworth is an English musician who performs as Get Cape. Wear Cape. Fly. He is sometimes referred to as Get Cape, Cape, GCWCF and Slam Dunkworth (the latter title apparently first coined by Emmy The Great). According to Duckworth, his original stage name came from Retro Gamer magazine, from an article about superhero games such as "Batman" containing the heading "Get Cape. Wear Cape. Fly". In addition to the Get Cape name, and his given name, Duckworth has released music under the moniker Recreations.
Document 14: Jevon Kearse: Jevon Kearse (born September 3, 1976), nicknamed "The Freak," is an American former football player who was a defensive end in the National Football League (NFL) for eleven seasons during the late 1990s and 2000s. Kearse played college football for the University of Florida, and received All-American honors. A first-round pick in the 1999 NFL Draft, he played professionally for the Tennessee Titans and Philadelphia Eagles of the NFL.
Document 15: Kaep (disambiguation): Kaep is a nickname for athlete Colin Kaepernick (although he prefers "Kap"). It may also refer to:
ground_truth: football