Question: In which conference does this college basketball team for which Willie Warren played compete?
Context: The Oklahoma Sooners men's basketball team represents the University of Oklahoma in men's NCAA Division I basketball.  The Sooners play in the Big 12 Conference. The 2009–10 Saint Mary's Gaels men's basketball team represented Saint Mary's College of California in the 2009–10 college basketball season.  This was head coach Randy Bennett's ninth season at Saint Mary's.  The Gaels compete in the West Coast Conference and played their home games at the McKeon Pavilion.  They finished conference play with a record of 11–3 to place second.  They were the champions of the 2010 West Coast Conference Men's Basketball Tournament and received the conference's automatic bid to the 2010 NCAA Men's Division I Basketball Tournament where they were a 10 seed in the South Region.  Their first round win over 7 seed Richmond was the school's first tournament win since beating Idaho State in 1959.  They continued their success by knocking off 2 seed and AP #9 Villanova to advance to the Sweet Sixteen where they would fall to 3 seed and AP #19 Baylor to end their season 28–6 The 1944–45 Oregon Webfoots men's basketball team were a college basketball team that represented the University of Oregon during the 1944–45 NCAA men's basketball season.  The Webfoots, coached by John Warren, played in the Pacific Coast Conference (PCC) and compiled a 30–15 win–loss record in regular and postseason competition and an 11–5 record in conference play.  Overall they finished with a home record of 13–6, away record of 16–7, and a neutral record of 1–2.  They finished 3rd regionally in the NCAA Tournament.  With a total of 45 games played, that is the most in NCAA history for one season. 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. The Gonzaga–Saint Mary's men's basketball rivalry is an intra-West Coast Conference college basketball rivalry between the Saint Mary's Gaels men's basketball team of Saint Mary's College of California in Moraga, California and the Gonzaga Bulldogs men's basketball team of Gonzaga University in Spokane, Washington.  Many analysts and members of the media have touted the Gaels vs. Zags as one of the best, if not the best, college basketball rivalry on the West Coast, as both teams have been consistently two of the top three teams in the conference over the last 2 decades.  Gonzaga and Saint Mary's have combined to win 19 out of the last 23 conference championship games, including 17 of the last 19 and each of the last nine.  The two teams have met a total of 96 times dating back to 1955 and currently meet biannually as a part of WCC conference play, with the potential to play a third game in the WCC Tournament and a fourth in the postseason.  As of March 2017, they have met 16 times in the WCC Tournament but have never met in any postseason tournaments beyond the end of conference play. The 1989–90 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1989–90 NCAA Division I season.  The Oklahoma Sooners men's basketball team played its home games in the Lloyd Noble Center and was a member of the National Collegiate Athletic Association's (NCAA) former Big Eight Conference at that time.  The team posted a 27–5 overall record and an 11–3 conference record to finish tied for second in the Conference for head coach Billy Tubbs.  This was the third Big Eight Conference Tournament Championship for Tubbs and his third NCAA Men's Division I Basketball Tournament #1 seed in a row.  The team earned the conference tournament championship competing in a conference in which three teams held the #1 national ranking in consecutive weeks in late February and early March. Willie D. Warren (born October 22, 1989) is an American professional basketball player for Petrochimi Bandar Imam of the Iranian Basketball Super League.  He played college basketball for Oklahoma. Anthony "T. J." Warren Jr. (born September 5, 1993) is an American professional basketball player for the Phoenix Suns of the National Basketball Association (NBA).  Originally from Durham, North Carolina, Warren played small forward for the NC State Wolfpack.  In the 2013–14 season, he led the Atlantic Coast Conference (ACC) in scoring and averaged a total of 24.9 points per game.  Warren was picked 14th overall in the 2014 NBA draft by the Phoenix Suns. Magnus Mainland (1878 – September 4, 1959) was a college football lineman and college basketball player and founding coach for The University of Texas at Austin.  Mainland was a native of Scotland.  Mainland was a nationally known basketball player as an undergraduate student at Wheaton College (Illinois).  His Wheaton team was able to compete in the college basketball competition in the 1904 Summer Olympics in St. Louis, the first Olympic Games featuring the young sport (although only as a demonstration sport).  Wheaton placed second out of the three competing college basketball teams.  Following his graduation from Wheaton, Mainland enrolled in engineering courses at The University of Texas.  While a student there, he was able to convince University officials to permit him to organize, coach, and play on the University's first varsity basketball team.  The Longhorns took the court for the first time on March 10, 1906, defeating the Baylor Bears 27–17 at outdoor Clark Field.  Texas won seven of the eight games scheduled in its inaugural season.  Mainland's second and final season as head coach resulted in a 4–4 overall record.  Due to inadequate funding, the University Athletics Council canceled the basketball program after two seasons, leaving Texas without a basketball team for 1908.  The program was reinstated in 1909 under the direction of UT German studies faculty member and previous Longhorn football head coach (1907–08) W. E. Metzenthin, who had supported students in their efforts to have the program revived. The Penn–Princeton basketball rivalry is an American college basketball rivalry between the Penn Quakers men's basketball team of the University of Pennsylvania and Princeton Tigers men's basketball team of Princeton University.  Having been contested every year since 1903, it is the third oldest consecutively played rivalry in National Collegiate Athletic Association Division I history.  Unlike many notable college basketball rivalries, such as Carolina–Duke, which involves teams that often both get invited to the same NCAA tournaments, Notre Dame–UCLA, which involves geographically remote teams, Illinois–Missouri, which involves non-conference rivals, or Alabama–Auburn, which takes a back seat to the football rivalry, this is a rivalry of geographically close, conference rivals, who compete for a single NCAA invitation and consider the basketball rivalry more important than other sports rivalries between the schools.  A head-to-head contest has been the final regularly scheduled game of the Princeton season every year since 1995.  Between 1963 and 2007, Princeton or Penn won or shared the Ivy League conference championship every season except 1986 and 1988.  The other seasons in which neither team won or shared the Ivy League title are 1957, 1958, 1962, 2008–10, and 2012-2016.
Answer: Big 12 Conference