Context_1 : The Big Eight Conference was a National Collegiate Athletic Association (NCAA)-affiliated Division I-A college athletic association that sponsored football. It was formed in January 1907 as the Missouri Valley Intercollegiate Athletic Association (MVIAA) by its charter member schools: the University of Kansas, University of Missouri, University of Nebraska, and Washington University in St. Louis. Additionally, the University of Iowa was an original member of the MVIAA, while maintaining joint membership in the Western Conference (now the Big Ten Conference). Context_2 : The 1988–89 Oklahoma Sooners men's basketball team represented the US University of Oklahoma in competitive college basketball during the 1988–89 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 30–6 overall record and a 12–2 conference record to earn the Conference title under head coach Billy Tubbs. This was the fourth Big Eight Conference Regular Season Championship for Tubbs and his second in a row. Context_3 : The 1978–79 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1978–79 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 21–10 overall record and a 10–4 conference record to finish first in the Conference for head coach Dave Bliss. This was the only Big Eight Conference Regular Season Championship for Bliss. Context_4 : The 1953 NCAA football season finished with the Maryland Terrapins capturing the AP, INS, and UPI national championship after Notre Dame held the top spot for the first nine weeks. The #4 Oklahoma Sooners defeated Maryland in the Orange Bowl, but there was no further polling after the November 30 results were released. However, Notre Dame was selected as the National Champions by 10 other polls and the Oklahoma Sooners received first in 2 polls. However, despite the team receiving National Championship rings, the University of Notre Dame does not recognize this title due to their policy of only recognizing AP or coaches' poll titles during the polling era (1936-present). Maryland was also the first champion of the Atlantic Coast Conference, which had been formed earlier in 1953 by seven colleges formerly with the Southern Conference. The year 1953 also saw the Michigan State Spartans, previously an independent, join the Big Nine Conference, which then became the Big Ten; MSU won the conference title in that first year and was the conference representative to the Rose Bowl, which it won 28-20 over UCLA. Context_5 : The 1983–84 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1983–84 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 29–5 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 Regular Season Championship for Tubbs. Context_6 : 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. Context_7 : The 1987–88 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1987–88 NCAA Division I men's basketball 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 35–4 overall record and a 12–2 conference record to earn the Conference title under head coach Billy Tubbs. This was the third Big Eight Conference Regular Season Championship for Tubbs and his second Big Eight Conference Tournament Championship. Context_8 : 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. Context_9 : 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. Context_10 : The 1980 Oklahoma Sooners football team represented the University of Oklahoma in the 1980 NCAA Division I-A football season. Oklahoma was a member of the Big Eight Conference and played its home games in Gaylord Family Oklahoma Memorial Stadium, where it has played its home games since 1923. The team posted a 10–2 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 eighth conference title and fifth undefeated conference record in eight seasons. fact_1 : The 1980 Oklahoma Sooners football team represented the University of Oklahoma in the 1980 NCAA Division I-A football season. fact_2 :  Oklahoma was a member of the Big Eight Conference and played its home games in Gaylord Family Oklahoma Memorial Stadium, where it has played its home games since 1923. fact_3 : The Big Eight Conference was a National Collegiate Athletic Association (NCAA)-affiliated Division I-A college athletic association that sponsored football. fact_4 :  It was formed in January 1907 as the Missouri Valley Intercollegiate Athletic Association (MVIAA) by its charter member schools: the University of Kansas, University of Missouri, University of Nebraska, and Washington University in St. Louis. Answer: The Big Eight Conference
Output: The Oklahoma Sooners was formerly a member of what conference formed in January 1907?