Question: What former American football coach, known as The Big Tuna, was hired by the Dallas Cowboys in 2003?

full_context: Document 1: 2003 Dallas Cowboys season: The 2003 Dallas Cowboys season was the 44th season for the team in the National Football League. Coming off three consecutive 5–11 seasons, Dallas hired former New York Giants, New York Jets, and New England Patriots coach Bill Parcells. In a scheduling coincidence, the Cowboys faced all three said teams in the 2003 regular season.
Document 2: Forrest Gregg: Alvis Forrest Gregg (born October 18, 1933) is a former American football player and coach in the National Football League (NFL), the Canadian Football League and the NCAA. A Pro Football Hall of Fame offensive lineman for sixteen seasons, he was a part of six NFL championships, five of them with the Green Bay Packers before closing out his tenure with the Dallas Cowboys with a win in Super Bowl VI. Gregg was later the head coach of three NFL teams (Cleveland Browns, Cincinnati Bengals, and the Packers), as well as two Canadian Football League teams (Toronto Argonauts and Shreveport Pirates).
Document 3: 2003 Arizona Cardinals season: The 2003 Arizona Cardinals season was the 84th season the team was in the National Football League and the 16th season in Arizona The team was unable to improve upon their previous output of 5–11, instead winning only four games, although this was not considered a disaster as before their win over the Packers there was talk the 2003 Cardinals would become the first NFL team to go 0–16. For the fifth consecutive season, the franchise failed to reach the playoffs, and based on point differential had the worst record in the only NFL season where every team won at least four games. This resulted in the Cardinals firing head coach Dave McGinnis and replacing him with Dennis Green. In his NFL debut, Anquan Boldin had 217 receiving yards.
Document 4: 1973 New England Patriots season: The New England Patriots finished the National Football League's 1973 season with a record of five wins and nine losses, third place in the five-team AFC East Division. It was the first year under head coach and general manager Chuck Fairbanks, hired in January after six seasons as head coach of the Oklahoma Sooners.
Document 5: Bill Cowher: William Laird Cowher (born May 8, 1957) is a former professional American football coach and player in the National Football League (NFL). In Cowher's 15 seasons as head coach of the Pittsburgh Steelers, the team won eight division titles and made 10 playoff appearances. Cowher led the Steelers to the Super Bowl twice, winning one. He is the second coach in NFL history to reach the playoffs in each of his first six seasons as head coach, a feat previously accomplished by Paul Brown. Cowher resigned as head coach of the Steelers on January 5, 2007, 11 months after winning Super Bowl XL in 2006 over the Seattle Seahawks. Cowher was replaced by current Steelers head coach Mike Tomlin. Before being hired by the Steelers in 1992, Cowher served as an assistant coach for the Cleveland Browns and Kansas City Chiefs under head coach Marty Schottenheimer. He is currently a studio analyst for "The NFL Today".
Document 6: 2000 Dallas Cowboys season: The 2000 Dallas Cowboys season was the 41st season for the team in the National Football League. Cowboys owner Jerry Jones would promote the team's long-time defensive coordinator, Dave Campo, to be the fifth head coach of the Dallas Cowboys. This was also Troy Aikman's last season with the team.
Document 7: Pete Carroll: Peter Clay "Pete" Carroll (born September 15, 1951) is an American football coach who is the head coach and executive vice president of the Seattle Seahawks of the National Football League (NFL). He is a former head coach of the New York Jets, New England Patriots, and the USC Trojans of the University of Southern California (USC). Carroll is one of only three football coaches who have won both a Super Bowl and a college football national championship. Carroll is the oldest head coach currently working in the NFL.
Document 8: 1994 Dallas Cowboys season: The 1994 Dallas Cowboys season would mark their 35th in the NFL. Following their second consecutive Super Bowl title, the Cowboys would see a multitude of changes. In March, months of frustration finally reached its climax as team owner Jerry Jones and head coach Jimmy Johnson held a press conference and announced Johnson's resignation. Jones would later hire former Oklahoma Sooners head coach and personal friend Barry Switzer to be the third head coach in franchise history. After a continue run of dominance in the regular season and finishing with a record of 12–4, the Cowboys fell short of a record third straight Super Bowl title with a loss to the San Francisco 49ers in the NFC Championship game. The 1994 Cowboys draft yielded only one notable addition to the team, offensive guard Larry Allen and veteran linebacker Ken Norton Jr. left the team to sign with San Francisco.
Document 9: Tom Coughlin: Thomas Richard "Tom" Coughlin ( ; born August 31, 1946) is the executive vice president of football operations for the Jacksonville Jaguars of the National Football League (NFL). He was the head coach for the New York Giants for 12 seasons. He led the Giants to victory in Super Bowl XLII and Super Bowl XLVI, both against the New England Patriots. Coughlin was also the inaugural head coach of the Jaguars, serving from 1995 to 2002 and leading the team to two AFC Championship Games. Prior to his head coaching career in the NFL, he was head coach of the Boston College Eagles football team from 1991 to 1993, and served in a variety of coaching positions in the NFL as well as coaching and administrative positions in college football.
Document 10: 1985 New York Giants season: The 1985 New York Giants season was the 61st season for the club in the National Football League (NFL). The Giants entered the season looking to improve on their 9–7 record in 1984, which was enough to qualify the team for the playoffs as the second wild-card team, and to return to the playoffs for the second consecutive year under third-year head coach Bill Parcells. The Giants managed to do both, finishing with 10 victories for the first time since 1963 when the team won 11 games and finishing as the first wild-card team which earned the Giants a home playoff game at Giants Stadium. They defeated the San Francisco 49ers 17–3 in that game, avenging their loss to the 49ers in the previous year's divisional playoffs. However, it was as far as the Giants could get as they were defeated by the eventual Super Bowl champion Chicago Bears in the divisional round at Soldier Field 21–0. Bill Parcells stated in "America's Game: 1986 Giants" that the game the Giants played against the Bears in the playoffs that "an honest evaluation of it, we could have probably beat that team one out of ten times. But that day was one of the days that that could have happened", the Giants were ultimately undone by a whiffed punt from legend Sean Landeta, the ball flew out of the air when he went to punt it from a burst of wind coming of Lake Michigan, the Bears recovered the ball for a touchdown from less than 5 yards from the end zone, and ended up winning 21-0. At the time, the team set a record for most rushing yards in one season by a Giants team.
Document 11: 1995 Dallas Cowboys season: The 1995 Dallas Cowboys season would mark their 36th in the NFL and final of the three Super Bowl titles they would win in the 1990s. Dallas would be the first team to ever win three Super Bowls in a span of four seasons. Second year head coach Barry Switzer guided the Cowboys to a fifth Super Bowl victory by defeating the Pittsburgh Steelers in Super Bowl XXX. As of 2017, this is the last time the Cowboys appeared in the NFC Championship Game, and in turn, their last Super Bowl appearance.
Document 12: Barry Switzer: Barry Layne Switzer (born October 5, 1937) is a former American football player and coach. He served for 16 years as head football coach at the University of Oklahoma and four years as head coach for the Dallas Cowboys of the National Football League (NFL). He helped the Cowboys win Super Bowl XXX against the Pittsburgh Steelers. He has one of the highest winning percentages of any college football coach in history, and is one of only three head coaches to win both a college football national championship and a Super Bowl, the others being Jimmy Johnson and Pete Carroll.
Document 13: 2007 Dallas Cowboys season: The 2007 Dallas Cowboys season was the 48th season for the team in the National Football League. This marked the first season for Wade Phillips as head coach. Jason Garrett also joined the team this season as offensive coordinator. The Cowboys finished the regular season tied for the best record in the NFC (13–3), and earned a first round bye and home field advantage throughout the playoffs. However, they lost their first playoff game to the eventual Super Bowl champion New York Giants, a team that they had defeated in their two regular-season matchups. With the loss, it extended the Cowboys drought of playoff wins to eleven years and tied the NFL record of 6 straight playoff games lost. 13 players were named to the Pro Bowl, an NFL record.
Document 14: Bill Parcells: Duane Charles "Bill" Parcells (born August 22, 1941), also known as The Big Tuna, is a former American football coach, best known as a head coach in the National Football League (NFL) for 19 seasons. He rose to prominence as the head coach of the New York Giants, whom he led to two Super Bowl titles. Parcells later served as the head coach of the New England Patriots, New York Jets, and Dallas Cowboys. Throughout his career, he coached teams that were in a period of decline and turned them into postseason contenders. He is the only coach in NFL history to lead four different teams to the playoffs and three different teams to a conference championship game.
Document 15: 2003 Chicago Bears season: The 2003 Chicago Bears season was their 84th regular season completed in the National Football League. The club posted a 7–9 record under head coach Dick Jauron. The team was once again in a quarterbacking carousel with quarterbacks Kordell Stewart, Chris Chandler, and rookie Rex Grossman. The club improved over its 4–12 record of the season before, but it was not enough to save Jauron's job.
ground_truth: Bill Parcells