Question: Before becoming the head coach of the Philadelphia Eagles, this person was also the head coach of what team?

Context articles: Chip Kelly
2013 Philadelphia Eagles season
Larry Cabrelli
Charlton Young
Andy Reid
Mark Whipple
Eugene Chung
Tommy Brasher
John Harbaugh
Howard Keys

Chip Kelly (born November 25, 1963) is a former American football coach.
 He is currently an ESPN analyst for NFL/NCAA football.
 He was a head coach in the National Football League (NFL) twice, with the Philadelphia Eagles from 2013 until 2015 , and with the San Francisco 49ers in 2016 .
 Before coaching in the NFL, he was the head coach of the Oregon Ducks from 2009 to 2012, leading the program to four consecutive BCS bowl game appearances including the 2011 BCS National Championship Game.
The Philadelphia Eagles season was the franchise's 81st season in the National Football League, and the first under head coach Chip Kelly.
 The Eagles improved on their 4–12 record from 2012, finishing 10–6 and clinching the NFC East division title and the playoffs for the first time since 2010, but after a close game, they lost to the New Orleans Saints in the Wild Card round of the playoffs, by a score of 26–24.
 The season was noted for LeSean McCoy winning the NFL rushing title, and the extremely successful season by Nick Foles where he produced 27 touchdowns to only 2 interceptions.
 It is one of the greatest seasons by any Quarterback in league history.
 Foles also threw 7 touchdowns against the Oakland Raiders.
 This tied an NFL record.
Lawrence Andrew Cabrelli (March 28, 1917 – June 5, 1974) was a professional football player and assistant coach in the National Football League.
 He began his pro career in 1941, after his graduation from Colgate University, where he also played college football.
 In the NFL, Cabrelli played for the Philadelphia Eagles.
 However was also a member of the "Steagles", a team that was the result of a temporary merger between the Eagles and Pittsburgh Steelers due to the league-wide manning shortages in 1943 brought on by World War II.
 From 1948 to 1950, he was an assistant coach for the Eagles under head coach, Greasy Neale.
 During his time as an Eagles coach, the team won two NFL Championships in 1948 and 1949.
 After leaving the Eagles in 1950, Cabrelli was named an assistant coach for the Washington Redskins.
 He finished his pro career as an assistant coach with the Winnipeg Blue Bombers of the Canadian Football League.
Charlton Young (born August 15, 1971) is an American college basketball assistant coach at Florida State and the former head coach of the Georgia Southern University Eagles men's basketball team, located in Statesboro, Georgia.
 He was the head coach of the Eagles from 2009-2013 and was the twelfth coach in the history of the program, replacing Jeff Price.
 The Eagles were collectively and individually successful during his four seasons as the head coach at the Statesboro, Ga., school.
 He led the Eagles to a second place finish in the Southern Conference standings in 2012 as the team earned the second-best turnaround in league history.
 For his efforts he was honored as the Southern Conference Coach of the Year by multiple publications (including rushthecourt.net) and was a finalist for the Ben Jobe Award which is presented annually to the top Division I minority head coach.
 Young coached four All-Southern Conference selections including Willie Powers (all-conference third team in 2010) and Eric Ferguson (all-conference first team in 2013, all-conference first-team and All-Southern Conference Tournament team in 2012 and the All-Freshman team in 2011).
 The selections of Powers and Ferguson to the all-conference team in 2013 marked the first time since 2007 that multiple Georgia Southern players had earned all-conference accolades in the same season.
 In 2013, he led the Eagles to a victory over Virginia Tech for the first win in program history over a team from the ACC.
Andrew Walter Reid (born March 19, 1958) is an American football coach who is the current head coach for the Kansas City Chiefs of the National Football League (NFL).
 Reid was previously the head coach of the Philadelphia Eagles, a position he held from 1999 to 2012.
 From 2001 to 2012, he was also the Eagles' executive vice president of football operations, effectively making him the team's general manager.
 He led the Eagles to five National Football Conference (NFC) championship games, including four consecutive appearances from 2001-2004, and one Super Bowl appearance in 2004.
 Reid was fired by Eagles owner Jeffrey Lurie following the 2012 season and reached an agreement to become the head coach of the Chiefs five days later.
 Reid played college football at Brigham Young University.
Mark John Whipple (born April 1, 1957) is an American football coach and former player.
 He is currently in his second stint as the head coach of the Massachusetts Minutemen football team.
 He is the former quarterbacks coach for the Cleveland Browns of the National Football League (NFL) in 2011 and 2012.
 Whipple served as the head football coach at University of New Haven (1988–1993), Brown University (1994–1997), and the University of Massachusetts Amherst (1998–2003).
 His 1998 UMass team won the NCAA Division I-AA Football Championship.
 Before joining the Browns in January 2011, Whipple worked for two seasons as the offensive coordinator at the University of Miami.
 He previously coached in the NFL, working as a quarterback coach with the Pittsburgh Steelers from 2004 to 2006 and as an offensive assistant coach with the Philadelphia Eagles in 2007 and 2008.
 On January 14, 2014, Whipple returned to UMass as head coach.
Eugene Yon Chung (born June 14, 1969) is a former American football offensive tackle who played in the National Football League from 1992 to 1997.
 He is currently the assistant offensive line/tight ends/run game coach for the Philadelphia Eagles.
 He was the assistant offensive line coach for the Kansas City Chiefs from 2013−2015 under head coach Andy Reid, after serving three seasons with him in Philadelphia Eagles in the same capacity.
 Chung was re-hired by the Eagles on January 20, 2016, by new head coach Doug Pederson, who was Chung's offensive coordinator with the Chiefs.
Tommy Brasher is an American football coach who currently serves as the Kansas City Chiefs' defensive line coach.
 He coached the Philadelphia Eagles line in 1985, then moved on to the Atlanta Falcons until 1989.
 After this he went to the Tampa Bay Buccaneers to coach for 1 year in 1990.
 He coached the Seattle Seahawks Defensive line from 1992-1998.
 Then he went back to the Philadelphia Eagles from 1999, until 2005, when he retired.
 In 2001, he was awarded the Eagles Ed Block Courage Award.
 He came out of retirement in 2012 to rejoin the Eagles after the firing of Jim Washburn to finish the season.
 After head coach Andy Reid was fired by the Eagles and hired by the Chiefs, Brasher was among the assistant coaches who followed Reid to Kansas City.
John W. Harbaugh (born September 23, 1962) is an American football coach who has been the head coach of the Baltimore Ravens of the National Football League (NFL) since 2008.
 Previously, he coached the defensive backs for the Philadelphia Eagles and served as the Eagles special teams coach for nine years.
 Harbaugh and his younger brother, former San Francisco 49ers and now University of Michigan head coach Jim Harbaugh, are the first pair of brothers in NFL history to serve as head coaches.
 Jack Harbaugh, Jim and John's father, served 45 years as a college defensive coach, an assistant coach, and a running backs coach.
 John and the Ravens beat his brother, Jim, and the 49ers at Super Bowl XLVII in New Orleans on February 3, 2013 by a score of 34-31.
Howard Newton "Sonny" Keys was an American football offensive lineman in the National Football League from 1960 to 1965 with the Philadelphia Eagles.
 He was born in Orlando, Oklahoma, on January 24, 1935.
 Sonny was a star athlete for the Pioneers at Stillwater High School in Stillwater, Oklahoma where he played football, basketball, baseball and track.
 He was named to the Oklahoma All-State football team and played in the All Stars game and the Oil Bowl.
 His high school named Sonny "Mr. Pioneer."
 He played all positions on the line, including center.
 He went to college at Oklahoma State University in Stillwater.
 At OSU, he was part of the Cowboys championship Blue Grass Bowl game which was broadcast by Howard Cosell.
 Sonny is described as a "mauling defender" in OSU's Heritage Hall Museum in historic Gallagher-Iba Arena.
 He was drafted in the 12th round of the 1959 NFL Draft.
 He was a part of Buck Shaw's 1960 NFL Championship season.
 He played five seasons with the Eagles and was known for knowing and playing every position on the offensive line.
 His family was featured in many local advertisements including Food Fair and a dairy distributorship.
 His teammate, Tommy McDonald, cited a tough Sonny Keys in the book "They Pay Me to Catch Footballs."
 In 1965, he joined Jerry Williams of the Calgary Stampeders as an assistant coach.
 After the Stampeders went to the Canadian Grey Cup, he chose to return to the NFL as an assistant coach with the Cleveland Browns under head coach Nick Skorich.
 After his death from complications of cancer in 1971, the Philadelphia Eagles dedicated their annual Christmas card to his memory.
 His outstanding scouting and recruiting abilities made his legacy live on in the NFL.
 For example, he brought fellow OSU alum, Jerry Sherk, to the Cleveland Browns, along with other top talents.
 As part of the 1960s world championship football team, Sonny was inducted into the city of Philadelphia Sports Hall of Fame in 2006.