Question: The football player that Billy Truax was traded for following the 1970 NFL season attended what college?
Context: Robert Conrad Anderson (born October 11, 1947) is a former American college and professional football player who was a halfback in the National Football League (NFL) for five seasons during the 1970s.  Anderson played college football for the University of Colorado, and received All-American honors.  He was picked in the first round of the 1970 NFL Draft, and played professional for the Denver Broncos, New England Patriots and Washington Redskins of the NFL.  Anderson was inducted into the College Football Hall of Fame in 2006. Hugh Lynn Pitts (April 8, 1934 – April 14, 2017) was an American football player.  Pitts attended Texas Christian University and played college football at the center position for the TCU Horned Frogs football team.  He was selected by the Central Press Association as a second-team player on its 1954 College Football All-America Team.  He was selected by the Los Angeles Rams in the second round (23rd overall pick) of the 1956 NFL Draft.  He appeared in nine games for the Rams during the 1956 NFL season and intercepted three passes.  He did not see further regular season action for the Rams and was traded to the Dallas Cowboys in July 1960.  Pitts instead jumped to the new American Football League and appeared in 12 games for the Houston Oilers during the 1960 AFL season.  He died on April 14, 2017 at the age of 83. William Frederick Truax (born July 15, 1943) is a former professional American football tight end in the National Football League (NFL) from 1964 to 1973 for the Los Angeles Rams and the Dallas Cowboys.  He played in high school at Holy Cross in New Orleans and college football at Louisiana State University and was drafted in the second round of the 1964 NFL draft.  Following the 1970 NFL season, Truax was traded by the Rams to the Cowboys for wide receiver Lance Rentzel.  He was part of the Cowboys' Super Bowl VI championship team in 1971. Thomas Lance Rentzel (born October 14, 1943) is a former American football flanker in the National Football League (NFL) for the Minnesota Vikings, Dallas Cowboys and the Los Angeles Rams.  He played college football at the University of Oklahoma. James Michael Mandich (July 30, 1948 – April 26, 2011), also known as "Mad Dog", was an American football player.  Mandich played college football for the University of Michigan from 1967 to 1969 and was recognized as a consensus first-team tight end on the 1969 College Football All-America Team.  A second-round pick in the 1970 NFL Draft, he played in the National Football League (NFL) as a tight end for the Miami Dolphins (1970-1977) and Pittsburgh Steelers (1978).  After his playing career ended, he worked as the color commentator for the Miami Dolphins and also hosted a sports talk show on local AM radio in Miami. Michael Elston Phipps (born January 19, 1947) is a former American college and professional football player who was a quarterback in the National Football League (NFL) for twelve seasons during the 1970s and 1980s.  Phipps played college football for Purdue University, and was recognized as an All-American.  He was the third overall pick in the 1970 NFL Draft, and played professionally for the Cleveland Browns and Chicago Bears of the NFL. Beginning in the 1970 NFL season, the National Football League began scheduling a weekly regular season game on Monday night before a national television audience.  From 1970–2005, the ABC television network carried these games, with the ESPN cable television network taking over beginning in September 2006.  Listed below are games played from 1970–1989. Wendell Edward Tucker (born September 4, 1943) is a former professional American football player who played wide receiver for four seasons for the Los Angeles Rams.  Tucker spent most of his first season on the "taxi-squad" while learning behind the Rams' starting flanker Bernie Casey.  Tucker saw action in 10 of the team's 14 games in 1968 (catching only 7 passes but 4 of them went for touchdowns), and then became the starting flanker after Casey's retirement.  The 1969 season would prove to be his most productive as, playing opposite wide receiver Jack Snow, he caught 38 passes for 629 yards and 7 touchdowns, including a 93 yarder vs. the 49ers for the Coastal Division champion Rams.  Tucker returned in 1970 but was hampered by injuries and caught only 12 passes in 12 games.  In May 1971, Tucker was traded along with Billy Truax to the Dallas Cowboys for receiver Lance Rentzel.  However, unable to regain his trademark speed because of a knee injury, Tucker retired before the start of the 1971 season. The 1970 NFL season was the 51st regular season of the National Football League, and the first one after the AFL–NFL merger.  The season concluded with Super Bowl V when the Baltimore Colts beat the Dallas Cowboys 16-13 at the Miami Orange Bowl.  The Pro Bowl took place on January 24, 1971, where the NFC beat the AFC 27-6 at the Los Angeles Memorial Coliseum. Steven Olson Tannen (born July 23, 1948) is an American former college and professional football player who was a defensive back in the National Football League (NFL) for five seasons during the early 1970s.  Tannen played college football for the University of Florida, and was recognized as an All-American.  He was a first-round pick in the 1970 NFL Draft, and played his entire professional career for the New York Jets of the NFL.
Answer: University of Oklahoma