Question: Clarence "Keith" Marquis Mitchell, is a former American football linebacker in which rganization,who played for the Houston Texans, a professional American football team based in Houston, Texas?

Context paragraphs:
Tony Simmons (gridiron football): Tony De'Angelo Simmons (born December 8, 1974) is a former American football player.  He is currently head coach of Lausanne Owls, an American football team based out of Lausanne, Switzerland.  He played in the National Football League for the New England Patriots, Cleveland Browns, Indianapolis Colts, Houston Texans and New York Giants.  He has also played for the Edmonton Eskimos, BC Lions of the Canadian Football League and the Triangle Razorbacks in Denmark and the Békéscsaba Raptors in Hungary.

Garland Boyette: Garland Boyette was a professional linebacker in the American Football League for the Houston Oilers and in the NFL for the St. Louis Cardinals (1962–63) and the Houston Oilers (1966–72).  In 1967, he was the regular starting middle linebacker for the Oilers and joined Willie Lanier of the Kansas City Chiefs as the first African-Americans to play that position in professional football.  He played in the Canadian Football League for the Montreal Alouettes from 1964 to 1965.  In 1974, he finished he played for the Houston Texans of the WFL.  Midway through the 1974 season the Texans moved to Shreveport and became the Steamer.  Boyette finished his career with the Shreveport Steamer of the WFL in 1975.  Boyette is the uncle of former Oiler teammate, and San Diego Chargers and Kansas City Chiefs defensive lineman Ernie Ladd.

Barrett Ruud: Barrett James Ruud (born May 20, 1983) is a former American football linebacker in the National Football League (NFL).  He was drafted by the Tampa Bay Buccaneers in the second round of the 2005 NFL Draft and also played for the Tennessee Titans, New Orleans Saints and Houston Texans.  He played college football at Nebraska.  He is currently employed as a quality control associate for the UCF football program.

Keith Mitchell (American football): Clarence "Keith" Marquis Mitchell (born July 24, 1974) is a former American football linebacker in the National Football League who played for the New Orleans Saints, the Houston Texans and the Jacksonville Jaguars between 1997 and 2003.

John Minardi: John Minardi (born October 19, 1979 in San Jose, California) is a former American football player.  He played high school football at Santa Margarita Catholic High School in Orange County, California, from 1995 to 1997.  In 1996, he caught 42 passes for 1,040 yards and 14 touchdowns; he also led the team with 117 tackles, the fourth best in school history.  He holds the school's records for most receiving yards in a game (242), a season (1,469), and a career (2,546), and for the most receiving touchdowns in a game (3), season (19), and career (33).  In high school, he played with quarterback Carson Palmer, and the two were called "the California high school equivalent of the San Francisco 49ers' Joe Montana and Jerry Rice."  He played college football for the Colorado Buffaloes from 1998 to 2001.  He was signed by the Houston Texans as an undrafted free agent in April 2002 but released in August 2002.  On August 16, 2002, the "Houston Chronicle" reported that Minardi was "battling long odds to make the roster," but noted that "all eyes were on him Thursday when he made a great catch of a pass from David Carr and dragged both feet inbounds in the back of the end zone for a touchdown."  However, he was waived by the Texans in the first week of September 2002.  In January 2003, the Texans allocated Minardi to the NFL Europe.  He played for the Scottish Claymores in the 2003 NFL Europe seasons.

Shreveport Steamer: The Shreveport Steamer were a professional American football team in the World Football League.  The franchise began the 1974 season in Houston, Texas, as the Houston Texans, who are in no way related to the current NFL team of the same name, playing their home games at the Houston Astrodome.  Toward the end of the season the team relocated to Shreveport, Louisiana, and became the Shreveport Steamer.  They played at the 30,000-seat State Fair Stadium, now named Independence Stadium.

Mike Vrabel: Michael George Vrabel ( ; born August 14, 1975) is a former American football linebacker and current defensive coordinator for the Houston Texans in the National Football League.  He played college football at Ohio State University, where he earned consensus All-American honors.  He was chosen by the Pittsburgh Steelers in the third round of the 1997 NFL Draft.  He also played professionally for the New England Patriots and Kansas City Chiefs.  After spending three years coaching linebackers and defensive linemen at Ohio State, Vrabel joined the Texans in January 2014 as linebackers coach.

Houston Texans: The Houston Texans are a professional American football team based in Houston, Texas.  The Texans compete in the National Football League (NFL) as a member club of the American Football Conference (AFC) South division.  The club first played in as an expansion team, which makes them the youngest franchise currently competing in the NFL.  The Texans replaced Houston's previous franchise, the Houston Oilers, which moved to Nashville, Tennessee and are now the Tennessee Titans.  The team's majority owner is Bob McNair.  While the team mainly struggled in the 2000s, they clinched their first playoff berth during the 2011 season as AFC South division champions.  The Texans have gone on to win more AFC South championships in 2012, 2015, and 2016.  To date, the Texans are the only NFL franchise to have never played in a conference championship game.

List of Houston Texans head coaches: There have been four head coaches of the Houston Texans, a professional American football team based in Houston, Texas, United States.  The Texans play in the South Division of the American Football Conference (AFC) in the National Football League (NFL).

Jason Lamar: Jason James Lamar (born November 10, 1978) is a former American football linebacker who played one season with the Houston Texans of the National Football League.  He played college football at the University of Toledo and attended Ypsilanti High School in Ypsilanti, Michigan.  He was also a member of the Hamilton Tiger-Cats, Montreal Alouettes and Edmonton Eskimos of the Canadian Football League.

Supporting paragraphs: Keith Mitchell (American football) Houston Texans
Answer: National Football League