Question: The 2000 NCAA Division 1-A football, the Oklahoma Sooners, played for what conference? 
Context: The 2010 NCAA Division 1 Softball Tournament was held from May 20 through June 8, 2010 and is part of the 2010 NCAA Division 1 softball season.  The 64 NCAA Division 1 college softball teams were selected out of an eligible 284 teams on May 16, 2010.  30 teams were awarded an automatic bid as champions of their conference, and 34 teams were selected at-large by the NCAA Division 1 Softball Selection Committee.  The tournament will culminate with 8 teams playing in the 2010 Women's College World Series at ASA Hall of Fame Stadium in Oklahoma City, Oklahoma. 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. The 2011 NCAA Division 1 Softball Tournament is being held from May 19 through June 8, 2011 and is part of the 2011 NCAA Division 1 softball season.  The 64 NCAA Division 1 college softball teams were selected out of an eligible 284 teams on May 15, 2011.  30 teams were awarded an automatic bid as champions of their conference, and 34 teams were selected at-large by the NCAA Division 1 Softball Selection Committee.  The tournament will culminate with 8 teams playing in the 2011 Women's College World Series at ASA Hall of Fame Stadium in Oklahoma City, Oklahoma. The 1984 Oklahoma Sooners football team represented the University of Oklahoma in the college football 1984 NCAA Division I-A season.  Oklahoma Sooners football participated in the former Big Eight Conference at that time and played its home games in Gaylord Family Oklahoma Memorial Stadium where it has played its home games since 1923.  The team posted a 9–2–1 overall record and a 6–1 conference record to earn a share of the Conference title under head coach Barry Switzer who took the helm in 1973.  This was Switzer's ninth conference title in twelve seasons. The 1979 Oklahoma Sooners football team represented the University of Oklahoma in the college football 1979 NCAA Division I-A season.  Oklahoma Sooners football participated in the former Big Eight Conference at that time and played its home games in Gaylord Family Oklahoma Memorial Stadium where it has played its home games since 1923.  The team posted an 11–1 overall record and a 7–0 conference record to earn the Conference title outright under head coach Barry Switzer who took the helm in 1973.  This was Switzer's seventh conference title and fourth undefeated conference record in seven seasons. The 1984–85 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1984–85 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 31–6 overall record and a 13–1 conference record to finish first in the Conference for head coach Billy Tubbs.  This was the first Big Eight Conference Tournament Championship and second Conference Regular Season Championship for Tubbs.  This was Tubbs' first NCAA Men's Division I Basketball Tournament #1 seed. The 2000 Oklahoma Sooners football team represented the University of Oklahoma in the 2000 NCAA Division I-A football season, the 106th season of Sooner football.  The team was led by Bob Stoops in his second season as head coach.  They played their home games at Oklahoma Memorial Stadium in Norman.  During this season, they competed in the Big 12 Conference. The 2000 NCAA Division I-A football season ended with the Oklahoma Sooners claiming their first national championship and their first conference championship since the departure of head coach Barry Switzer. The 1978 Oklahoma Sooners football team represented the University of Oklahoma in the college football 1978 NCAA Division I-A season.  Oklahoma Sooners football participated in the former Big Eight Conference at that time and played its home games in Oklahoma Memorial Stadium where it has played its home games since 1923.  The team posted an 11–1 overall record and a 6–1 conference record to earn a share of the conference title under head coach Barry Switzer.  This was Switzer's sixth conference title in six seasons since taking the helm in 1973. The 2000 UCLA Bruins baseball team represented the University of California, Los Angeles in the 2000 NCAA Division I baseball season.  The team played their home games in Jackie Robinson Stadium.  The Bruins finished the season with a 38–26 overall record.  With a 17–7 conference record, UCLA shared the Pacific-10 Conference Championship with Arizona and Stanford.  The team qualified for the 2000 NCAA Division I Baseball Tournament, and were seeded #1 in the Oklahoma City Regional.  The Bruins beat Delaware and Oklahoma to reach the regional finals.  UCLA again played the Oklahoma Sooners in the finals, and beat them 11–3 to advance to the Baton Rouge Super Regionals.  The Bruins faced the LSU Tigers, who were the #1 seed from the Baton Rouge Regional.  UCLA lost the first game of the series 2–8, and lost the second game 8–14.  LSU went on to win the 2000 College World Series, and never lost a game in the entire tournament.
Answer: Big 12 Conference