Question: Who was the head coach of the football team that won the 2014 Pac-12 Football Championship Game?

Context paragraphs:
2016 Pac-12 Football Championship Game: The 2016 Pac-12 Football Championship Game was played on Friday, December 2, 2016 at Levi's Stadium in Santa Clara, California to determine the champion of the Pac-12 Conference in football for the 2016 season.  It was the sixth football championship game in Pac-12 Conference history.  The game featured the South Division champion Colorado Buffaloes against the North Division champion Washington Huskies.  Washington defeated Colorado by a score of 41–10 to win their first conference championship since 2000 and their first outright title since 1991.

2015 Pac-12 Football Championship Game: The 2015 Pac-12 Football Championship Game was played on Saturday, December 5, 2015 at Levi's Stadium in Santa Clara, California to determine the champion of the Pac-12 Conference in football for the 2015 season.  It was the fifth championship game in Pac-12 Conference history.  The game featured the South Division champion USC Trojans against the North Division champion Stanford Cardinal.  Stanford defeated USC 41–22 to win their third conference championship game.

2014 All-Pac-12 Conference football team: The 2014 All-Pac-12 Conference football team consists of American football players chosen by various organizations for All-Pac-12 Conference teams for the 2014 Pac-12 Conference football season.  The Oregon Ducks won the conference, defeating the Arizona Wildcats 51 to 13 in the Pac-12 Championship game.  Oregon was then the national runner-up, in the College Football Playoff semifinal beating the ACC champion Florida States Seminoles 59 to 20; then losing to the Big Ten champion Ohio State Buckeyes 42 to 20 in the national championship game.  Oregon quarterback Marcus Mariota won the Heisman Trophy and was voted Pac-12 Offensive Player of the Year.  Arizona linebacker Scooby Wright III was voted Pat Tillman Pac-12 Defensive Player of the Year.

2014 Pac-12 Football Championship Game: The 2014 Pac-12 Football Championship Game was played on Friday, December 5, 2014 at Levi's Stadium in Santa Clara, California.  It was the fourth championship game in the history of the Pac-12 Conference.  The game featured the Arizona Wildcats against the Oregon Ducks.  The two teams met on October 2, with Arizona winning 31–24.  Arizona had won two consecutive games versus Oregon.  Oregon led the all-time series 24–16 heading into the game.  The game started at 6:21 PM PST and was broadcast by FOX.  The Oregon Ducks defeated the Arizona Wildcats 51–14 for the championship.

2013 Pac-12 Football Championship Game: The 2013 Pac-12 Football Championship Game was played on Saturday, December 7, 2013 at Sun Devil Stadium in Tempe, Arizona, to determine the champion of the Pac-12 Conference in football for the 2013 season.  North Division champion Stanford defeated South Division champion Arizona State to win their second consecutive Pac-12 title.  The ESPN television networks broadcast the game, beginning at 4:45 PM PT/5:45 PM MT. Stanford went on to represent the Pac-12 Conference in the 2014 Rose Bowl Game.

2015 Utah Utes football team: The 2015 Utah Utes football team represented the University of Utah during the 2015 NCAA Division I FBS football season.  The team was coached by eleventh year head coach Kyle Whittingham and played their home games in Rice-Eccles Stadium in Salt Lake City, Utah.  They were members of the South Division of the Pac-12 Conference.  They finished the season 10–3, 6–3 in Pac-12 play to finish in a tie for the South Division title.  Due to their head-to-head loss to USC, they did not represent the South Division in the Pac-12 Football Championship Game.  They were invited to the Las Vegas Bowl where they defeated rival BYU.

2012 Pac-12 Football Championship Game: The 2012 Pac-12 Football Championship Game was played on Friday, November 30, 2012 at Stanford Stadium in Stanford, California to determine the 2012 football champion of the Pac-12 Conference (Pac-12).  It was the second football conference championship for the Pac-12 Conference, or any of its predecessors.  The game featured the South Division champions, the UCLA Bruins, against the North Division champions, the Stanford Cardinal.  The previous week, the two teams had met at UCLA's home stadium at the Rose Bowl, with Stanford winning 35–17 and clinching the Pac-12 North Division championship.  Stanford headed back to Pasadena for the January 1, 2013 Rose Bowl Game where they defeated the Wisconsin Badgers 20–14.

2011 Stanford Cardinal football team: The 2011 Stanford Cardinal football team represented Stanford University in the 2011 NCAA Division I FBS college football season.  The Cardinal were led by former offensive coordinator and new head coach David Shaw, as Jim Harbaugh departed following the 2010 season in order to become the head coach of the San Francisco 49ers.  They played their home games at Stanford Stadium and are members of the North Division of the Pac-12 Conference.  They finished the season with 11–2 in overall record, 8–1 in Pac-12 play to finish in a tie with Oregon for first place in the North Division.  Due to their head-to-head loss to Oregon, they did not represent the division in the inaugural Pac-12 Football Championship Game.  They were invited the Fiesta Bowl, their second consecutive BCS game, where they were defeated by Oklahoma State 38–41 in overtime.

2016 Colorado Buffaloes football team: The 2016 Colorado Buffaloes football team represented the University of Colorado Boulder during the 2016 NCAA Division I FBS football season.  Led by fourth-year head coach Mike MacIntyre, they played their home games on-campus at Folsom Field in Boulder and were members of the South Division of the Pac-12 Conference.  They finished the season 10–4, 8–1 in Pac-12 play to win their first Pac-12 Division South Division Title.  They represented the South Division in the 2016 Pac-12 Football Championship Game where they lost to Washington.  They were invited to the Alamo Bowl where they lost to Oklahoma State.

2014 Oregon Ducks football team: The 2014 Oregon Ducks football team represented the University of Oregon in the 2014 NCAA Division I FBS football season.  The team was led by second-year head coach Mark Helfrich and played their home games at Autzen Stadium for the 48th straight year.  They were a member of the Pac-12 Conference in the North Division.

Supporting paragraphs: 2014 Pac-12 Football Championship Game 2014 Oregon Ducks football team
Answer: Mark Helfrich