Question: In which conference does the team, for which Willie Warren played college basketball, play?

Context paragraphs:
Oklahoma Sooners men's basketball: 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.

Garnett Thompson: Garnett Thompson is an American professional basketball player.  He is from Islip, New York and initially played college basketball at Suffolk Community College.  The 6'9" Forward played college basketball with the Providence Friars.  He only played at Providence University for 1 year.  He has played internationally with AZS Koszalin of Poland.  Thompson has played professionally in Lebanon as well.  In Lebanon, he has helped the Ceders achieve success.  He has played at Lebanon for 5 years.  He has also found playing time in Street Basketball at the Entertainers Ball Classic at Rucker Park.  He returned in 2016 to play with the Lebanese team Champville without being paid in the Henri Chalhoub Tournament, he helped his team reach the final but lost against Byblos.

Charlton Young: 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.

Derrick Walton: Derrick Walton Jr. (born April 3, 1995) is an American basketball player for the Miami Heat of the National Basketball Association (NBA), on a two-way contract with the Heat's NBA G League affiliate, the Sioux Falls Skyforce.  Walton played college basketball for the Michigan Wolverines.  In high school, he was a 2013 "Parade" All-American, the 2013 Michigan Boys Basketball Gatorade Player of the Year and the runner up in the 2013 Mr. Basketball of Michigan as a senior at Chandler Park Academy.  He was a 2013–14 Big Ten Conference men's basketball season All-Freshman selection in the Big Ten for the 2013–14 team, which won the 2013–14 Big Ten Conference regular-season championship outright.  He was a 2015–16 Big Ten Conference men's basketball season All-Big Ten third team selection by the coaches and honorable mention selection by the media as a junior.  He was a 2016–17 Big Ten Conference men's basketball season All-Big Ten second team selection by the coaches and the media as a senior.  Walton is the only Wolverine with 1,000-points, 500-rebounds and 400-assists and holds the school single-game assist record (16).  He was the Most Outstanding Player of the 2017 Big Ten Conference Men's Basketball Tournament for the tournament champion 2016–17 Wolverines.

Willie Warren: 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.

Notre Dame Fighting Irish men's basketball: The Notre Dame Fighting Irish men's basketball team is the intercollegiate men's basketball program representing the University of Notre Dame in Notre Dame, Indiana, United States.  The program competes in the Atlantic Coast Conference of NCAA Division I.  On September 12, 2012, Notre Dame announced they would be moving to the Atlantic Coast Conference; they joined the conference on July 1, 2013.  The school holds two retroactively awarded national championships in basketball from the Helms Foundation: for the 1927 (19–1 overall record) and 1936 (22–2–1 overall record) seasons.  They have also played in the NCAA Tournament 35 times, good for 9th all time, and reached the Final Four in 1978.  They are also the first Big East team to go undefeated at home two straight seasons.  They play their home games in the Purcell Pavilion at the Edmund P. Joyce Center.  Since moving to the Purcell Pavilion in 1968, they have had 44 winning seasons at the Purcell Pavilion, including 5 undefeated seasons at home (1973, 1985, 2006, 2007, and 2010) and have had only 4 losing seasons at the Purcell Pavilion (1971, 1981, 1992, and 1995).  Jeff Sagarin and ESPN listed the program 12th in the college basketball all-time rankings in the "ESPN College Basketball Encyclopedia".  The Fighting Irish are currently coached by Mike Brey.

CBE Hall of Fame Classic: The CBE Hall of Fame Classic (formerly known has the College Basketball Experience Classic) named after the College Basketball Experience is an annual season-opening college basketball tournament founded in 2001.  The tournament is currently held in mid-November.  There are twelve teams invited, each representing a different athletic conference.  The initial two rounds are played at regional sites on two different days hosted by participating team.  The regional hosts automatically advance championship round in Kansas City, Missouri, with the games played at the Sprint Center.  The championship round takes place one week after the initial round.  Teams not hosting advance to sub regional rounds where they will play three games.  In 2006, the event was renamed the College Basketball Experience Classic (CBE) after the college basketball fan interactive facility.  Before the 2007 tournament, the final rounds were held at Municipal Auditorium, except for one year at Kemper Arena in 2001.  The event is organized by the National Association of Basketball Coaches (NABC) and produced by Blue Ridge Sports & Entertainment, Inc.

Zak Irvin: Zakarie Tyler "Zak" Irvin (born September 5, 1994) is an American basketball for Victoria Libertas Pesaro of the Italian League.  He played college basketball for the Michigan Wolverines.  He earned the 2013 Indiana Mr. Basketball and Indiana Boys Basketball Gatorade Player of the Year while playing for Hamilton Southeastern High School.  At Michigan, he was twice recognized as Big Ten Conference Freshman of the Week for the 2013–14 team, which won the 2013–14 Big Ten Conference regular-season championship outright.  He was a 2015–16 Big Ten Conference men's basketball season All-Big Ten honorable mention honoree by the coaches and the media as well as a 2016 Big Ten Conference Men's Basketball Tournament All-Tournament Team selection as a junior.  He was a 2016–17 Big Ten Conference men's basketball season All-Big Ten honorable mention honoree by the media as a senior as well as a 2017 Big Ten Conference Men's Basketball Tournament All-Tournament Team selection for the champion 2016–17 Wolverines.  He led the Big Ten in minutes played as a senior and tied the Michigan record for career games played (142).

T. J. Warren: 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.

Gonzaga–Saint Mary's men's basketball rivalry: 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.

Supporting paragraphs: Willie Warren Oklahoma Sooners men's basketball
Answer: Big 12 Conference