Question: What American quarterback for the Vikings worked with Terry Shea?

full_context: Document 1: Terry Bradshaw: Terry Paxton Bradshaw (born September 2, 1948) is a former American football quarterback who played professionally in the National Football League (NFL). Since 1994, he has been a TV analyst and co-host of "Fox NFL Sunday". Bradshaw is also an actor, having participated in many television shows and films, most notably starring in the movie "Failure To Launch". He played for 14 seasons with Pittsburgh, won four Super Bowl titles in a six-year period (1974, 1975, 1978, and 1979), becoming the first quarterback to win three and four Super Bowls, and led the Steelers to eight AFC Central championships. He was inducted into the Pro Football Hall of Fame in 1989, his first year of eligibility. Bradshaw was inducted into the College Football Hall of Fame in 1996.
Document 2: Cam Newton: Cameron Jerrell Newton (born May 11, 1989) is an American football quarterback for the Carolina Panthers of the National Football League (NFL). He played college football at Auburn and was drafted as the first overall pick by the Panthers in the 2011 NFL Draft. Newton is the only player in the modern era to be awarded the Heisman Trophy, win a national championship, and become the first overall pick in an NFL draft within a one-year span. He was the 2011 NFL Rookie of the Year, is a three-time Pro Bowler, and was named to the NFL All-Pro First Team in 2015.
Document 3: Adrian Peterson: Adrian Lewis Peterson (born March 21, 1985) is an American football running back for the New Orleans Saints of the National Football League (NFL). He played college football at Oklahoma and was drafted by the Minnesota Vikings seventh overall in the 2007 NFL Draft. Peterson set the NCAA freshman rushing record with 1,925 yards as a true freshman during the 2004 season. As a unanimous first-team All-American, he became the first freshman to finish as the runner-up in the Heisman Trophy balloting. Peterson finished his college football career as the Sooners' third all-time leading rusher.
Document 4: Josh Freeman: Joshua Tyler Freeman (born January 13, 1988) is an American football quarterback who is currently a free agent. He played college football at Kansas State University, and was drafted by the Tampa Bay Buccaneers in the first round of the 2009 NFL Draft. Freeman also been a member of the Minnesota Vikings, New York Giants, Miami Dolphins and Indianapolis Colts, as well as the Brooklyn Bolts of the Fall Experimental Football League (FXFL).
Document 5: Steve Clarkson: Steven Levert "Steve" Clarkson (born October 31, 1961) is an American football coach. Based in Pasadena, California, he is considered a top quarterback coach. Clarkson has tutored Ben Roethlisberger, Brett Hundley, Matt Leinart, J. P. Losman, Gino Torretta, Matt Barkley, Tim Tebow, Josh Freeman, and Jimmy Clausen, among others. Clarkson is also known for helping to get offers for David Sills from University of Southern California and Tate Martell from the University of Washington at ages of 13. David Sills currently attends West Virginia University and Tate Martell has committed to Ohio State University.
Document 6: Matt Leinart: Matthew Stephen "Matt" Leinart (born May 11, 1983) is a former American football quarterback who now works as a studio analyst for Fox Sports’ college football coverage. He played college football at the University of Southern California (USC) from 2001 to 2005. He was the starting quarterback for the Trojans in 2003, 2004, and 2005. As junior in 2004, he won the Heisman Trophy. Leinart played professionally in the National Football League (NFL) for the Arizona Cardinals (2006–2009), Houston Texans (2010–2011), Oakland Raiders (2012), and Buffalo Bills (2013). Leinart signed a deal with the Pac-12 Network, making his official debut as a Studio Analyst on August 30, 2014. He is a recurring guest, via voicemail, on the Barstool Sports podcast Pardon My Take. Leinart will be inducted into the College Football Hall of Fame in 2017.
Document 7: Toby Gerhart: Tobin Bo Gunnar Gerhart (born March 28, 1987) is an American football running back who is currently a free agent. He was selected by the Minnesota Vikings in the second round of the 2010 NFL Draft. He played college football for Stanford University, and was a unanimous All-American. In 2009 Gerhart won the Doak Walker Award and was the runner-up for the 2009 Heisman Trophy. He received 1,276 points in the Heisman voting, coming in second to Mark Ingram Jr., who received 1,304 points; the 28-point margin was the closest vote in Heisman history. Gerhart had a breakout senior season in 2009, leading all running backs in the nation in rushing yards, touchdowns, and points scored, and setting several Pac-10 and school records. He held the Stanford record for most rushing yards in a season (1,871) until Christian McCaffrey broke it in 2015, but still holds Cardinal records for touchdowns in a season (28), and most touchdowns in a career (44).
Document 8: Terry Shea: Terence William Shea (born June 12, 1946) is an American football coach and former player. Currently, Shea does quarterback consulting work for future NFL draft prospects. Most recently he worked with Robert Griffin III "RG3" (2nd overall pick 2012), Blaine Gabbert (10th overall pick 2011), Sam Bradford (1st overall pick 2010), Matthew Stafford (1st overall pick 2009), and Josh Freeman (17th overall pick 2009. whom Shea later brought to the Bolts in 2015). Shea also trained and developed current college quarterbacks Collin Klein (Kansas State) and Tommy Rees (Notre Dame).
Document 9: 2010 St. Louis Rams season: The 2010 St. Louis Rams season was their 73rd season for the franchise, and their 16th overall in St. Louis. St. Louis greatly improved on their near winless record of 1–15 from the 2009 season by achieving more total victories, with a record of 7–9, than in their previous 3 years. Since the start of the 2007 NFL season, the Rams had won just 6 combined games, and have not qualified for the playoffs since 2004. In the 2010 NFL Draft, the Rams had the number 1 overall pick, which they picked Sam Bradford from Oklahoma. This year marked their second season under head coach Steve Spagnuolo. The Rams played all of their home games at the Edward Jones Dome, in St. Louis, Missouri.
Document 10: Seth Doege: Seth Colton Doege (born December 18, 1988) is an American football coach and formerly professional Canadian football quarterback. After playing college football for Texas Tech University, he was signed by the Atlanta Falcons as an undrafted free agent in 2013. On February 27, 2014, he was signed to the Saskatchewan Roughriders of the Canadian Football League. Doege was Texas Tech's starting quarterback for the 2011 and 2012 seasons. He is currently the wide receivers coach for Bowling Green.
Document 11: Sam Bradford: Samuel Jacob Bradford (born November 8, 1987) is an American football quarterback for the Minnesota Vikings of the National Football League (NFL). Bradford attended Putnam City North High School in Oklahoma City, where he starred in football, basketball and golf. As a senior quarterback in 2005, he threw for 2,029 yards and 17 touchdowns in 12 games. Bradford was not highly recruited coming out of high school, but he did receive a scholarship offer from the University of Oklahoma, which he accepted. After a redshirt season in 2006, Bradford threw for 3,121 yards and 36 touchdowns as a redshirt freshman. That set the stage for a phenomenal 2008 year, when Bradford became only the second sophomore to win the Heisman Trophy as he was the trigger man for the highest-scoring offense in NCAA history, throwing for 4,464 yards with 48 touchdowns and just six interceptions. He again led the nation in passing and also added five rushing touchdowns as the Sooners went 12-1 and advanced to the BCS national title game. Bradford declared for the NFL draft following the 2009 season and was drafted by the St. Louis Rams with the first overall pick in the 2010 NFL Draft.
Document 12: Matt Barkley: Matthew Montgomery Barkley (born September 8, 1990) is an American football quarterback who is currently a free agent. He played college football at USC, and was drafted by the Philadelphia Eagles in the fourth round of the 2013 NFL Draft. Barkley has also played for the Arizona Cardinals, Chicago Bears and San Francisco 49ers.
Document 13: Terry Glenn: Terry Tyree Glenn (born July 23, 1974) is a former American college and professional football player who was a wide receiver in the National Football League (NFL) for 12 seasons. He played college football for Ohio State University, and was recognized as an All-American. He was drafted by the New England Patriots seventh overall in the 1996 NFL Draft, and also played for the Green Bay Packers and Dallas Cowboys.
Document 14: 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 15: Tee Martin: Tamaurice Nigel "Tee" Martin (born July 25, 1978) is an American football coach and former quarterback who played in the National Football League and Canadian Football League. He is the current offensive coordinator for the University of Southern California Trojans.
ground_truth: Samuel Jacob Bradford