Question: What is the name of the football team that defeated the Stanford Cardinal 31–27 on December 31, 2009 at the Sun Bowl?
Context: The 1996 Norwest Sun Bowl, played on December 31, 1996, featured the Stanford Cardinal and the Michigan State Spartans. The 2013 Sun Bowl was an American college football bowl game that was played on December 31, 2013, at Sun Bowl Stadium in El Paso, Texas.  In this 80th edition of the Sun Bowl, the UCLA Bruins of the Pac-12 Conference met the Virginia Tech Hokies of the Atlantic Coast Conference.  The game started at 12:00 noon MST, and was televised on CBS and heard on the Sports USA Radio Network.  It was one of the 2013–14 bowl games that concluded the 2013 FBS football season.  The game was sponsored by the Hyundai Motor Company and was officially known as the Hyundai Sun Bowl.  UCLA defeated Virginia Tech 42-12 for the Sun Bowl Championship. The Notre Dame–Stanford football rivalry is an American college football rivalry between the Notre Dame Fighting Irish football team of the University of Notre Dame and Stanford Cardinal football team of Stanford University.  As of 2016, the Notre Dame Fighting Irish and Stanford Cardinal have met 31 times, beginning in 1925 (though the modern series began in 1988).  The Notre Dame–Stanford game has been played annually since 1997, with the teams meeting at Notre Dame Stadium earlier in the season (late September to mid-October) in even-numbered years, and at Stanford Stadium on the weekend following Thanksgiving in odd-numbered years since 1999.  The game typically alternates positions in Notre Dame's schedule with its other Pac-12 opponent, USC. The 2012 Hyundai Sun Bowl, the 79th edition of the game, was a post-season American college football bowl game, held on December 31, 2012, at Sun Bowl Stadium in El Paso, Texas, as part of the 2012–13 NCAA Bowl season.  The game, the 79th edition of the Sun Bowl, was televised in the United States on CBS. The 2016 Stanford Cardinal football team represented Stanford University in the 2016 NCAA Division I FBS football season.  The Cardinal were led by sixth-year head coach David Shaw.  They played their home games at Stanford Stadium and were members of the North Division of the Pac-12 Conference.  They finished the season 10–3, 6–3 in Pac-12 play to finish in third place in the North Division.  They were invited to the Sun Bowl where they defeated North Carolina. The 2014 Rose Bowl was a college football bowl game that was played on January 1, 2014 at the Rose Bowl stadium in Pasadena, California.  This 100th Rose Bowl Game matched Big Ten Conference Champions Michigan State Spartans against Pac-12 Conference Champions Stanford Cardinal (the defending Rose Bowl champions), a rematch of the 1996 Sun Bowl.  It was one of the 2013–14 bowl games that concluded the 2013 FBS football season.  The first game in the final edition of the Bowl Championship Series, it was sponsored by the Vizio consumer electronics company, and officially titled the Rose Bowl Game presented by Vizio. The 2009 Oklahoma Sooners football team represented the University of Oklahoma in the 2009 NCAA Division I FBS football season, the 115th season of Sooner football.  The team was led by two-time Walter Camp Coach of the Year Award winner, Bob Stoops, in his 11th season as head coach.  They played their home games at Gaylord Family Oklahoma Memorial Stadium in Norman, Oklahoma.  They were a charter member of the Big 12 Conference. The 2007 Stanford Cardinal football team represented Stanford University in the 2007 NCAA Division I FBS football season.  In Jim Harbaugh's inaugural season at Stanford, the 41-point underdog Cardinal pulled off the greatest point-spread upset in college football history by defeating the #1 USC Trojans in a mid-season game (USC had been ranked No. 1 in all national pre-season polls, picked unanimously to win the Pac-10 Conference, and expected to contend for a national championship - until the Stanford upset).  To cap off Harbaugh's first season, the Cardinal defeated archrival Cal in Stanford's final game of the season to win the Stanford Axe for the first time in six years (aside from these two huge rivalry wins however the Cardinal went 2-8). The 1977 Sun Bowl game was a post-season college football bowl game between the LSU Tigers and the Stanford Cardinals played on December 31, 1977, at Sun Bowl Stadium in El Paso, Texas.  It was the 43rd edition of the Sun Bowl. The 2009 Brut Sun Bowl game was the 76th edition of the annual college football bowl game known as the Sun Bowl.  The Oklahoma Sooners defeated the Stanford Cardinal 31–27 on December 31, 2009.  It was the two teams' fifth meeting.  The game featured two conference tie-ins: the University of Oklahoma represented the Big 12 Conference and Stanford University represented the Pacific-10 Conference.  The game was played at the Sun Bowl Stadium on the University of Texas at El Paso campus in El Paso, Texas.
Answer: Oklahoma Sooners