Question: Following the 1970 NFL season, Billy Truax was traded by the Rams to the Cowboys for a wide receiver that played football at what college? 

Context paragraphs:
Donnie Williams (American football): Charles Donell "Donnie" Williams (born March 12, 1948) is an American football wide receiver who played one season with the Los Angeles Rams of the National Football League.  He was drafted by the Rams in the second round of the 1970 NFL Draft.  He played college football for the Prairie View A&M Panthers of Prairie View A&M University.  He attended L. G. Pinkston High School in Dallas, Texas.

Wendell Tucker: 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 Catch (American football): The Catch refers to the winning touchdown pass in the 1981 NFC Championship Game played between the Dallas Cowboys and San Francisco 49ers at Candlestick Park on January 10, 1982, as part of the 1981–82 NFL playoffs following the 1981 NFL season.  With 58 seconds left in the game, San Francisco wide receiver Dwight Clark made a leaping grab in the back of the end zone to complete a 6-yard touchdown pass from quarterback Joe Montana, enabling the 49ers to defeat the Cowboys, 28–27.  "The Catch" is widely regarded as one of the most memorable events in National Football League (NFL) history.  The game represented the end of the Cowboys' domination in the NFC since the conference's inception in 1970, and the beginning of the 49ers' rise as an NFL dynasty in the 1980s.

Walker Gillette: Walker Adams Gillette (born March 16, 1947) is a former American football wide receiver in the National Football League for the San Diego Chargers, St. Louis Cardinals, and the New York Giants.  He played college football for the University of Richmond and was drafted 15th overall in the first round of the 1970 NFL Draft.  Gillette's father, Jim Gillette, also played in the NFL.

Haven Moses: Haven Christopher Moses (born July 27, 1946) is a former professional American football player.  He played professionally as a wide receiver in the American Football League (AFL) and National Football League (NFL).  He played college football at Los Angeles Harbor College and San Diego State University.  He was selected ninth overall in the 1968 Common Draft by the AFL's Buffalo Bills.  During the 1972 season, he was traded to the Denver Broncos for wide receiver Dwight Harrison.  Moses made the AFL All-Star Game in 1969 and the NFL Pro Bowl in 1973.  He is on the "Ring of Fame" in Sports Authority Field at Mile High, and was a 1986 inductee to the Colorado Sports Hall of Fame. <ref name="http://www.denverpost.com/2009/07/25/former-broncos-wr-moses-has-some-unfinished-business/">MHR's Forgotten Broncos -- Haven Moses</ref>

Dante Hall: Damieon Dante Hall (born September 20, 1978) is a former American football return specialist and wide receiver who played nine seasons in the National Football League (NFL).  Hall is considered one of the best return specialists in NFL history.  Hall is nicknamed "The Human Joystick."  Hall was a fifth round draft pick out of Texas A&M University by the Kansas City Chiefs in the 2000 NFL Draft.  Hall played for the Chiefs for six years before being traded to the St. Louis Rams on April 25, 2007 for the Rams' third and fifth-round pick in the 2007 NFL Draft.  Hall was ranked the 10th greatest return specialist in NFL History on NFL Network's NFL Top 10 Return Aces.

Billy Truax: 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.

Ken Burrough: Kenneth Othell Burrough (born July 14, 1948) is a former professional American football player who was selected by the New Orleans Saints in the first round (10th overall) of the 1970 NFL Draft.  A 6'4", 210 lb wide receiver from William M. Raines High School who played for Texas Southern University, Burrough played in 12 NFL seasons for the Saints and Houston Oilers from 1970 to 1981.  A two-time Pro Bowl selection in 1975 and 1977, Burrough led all NFL wide receivers in receiving yards with 1,063 in 1975.  He was the last NFL player to wear number 00 on his jersey; the league restricted all numbers to between 1 and 89 in 1973 (later expanded to 1 and 99 in 1987), but Burrough and Jim Otto, both of whom wore 00 at the time, were covered under a grandfather clause for the rest of their careers.  Ranks 85th on NFL All-Time Yards per Reception List (16.9).

Hugh Pitts: 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.

Lance Rentzel: 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.

Supporting paragraphs: Billy Truax Lance Rentzel
Answer: University of Oklahoma