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? 
Sentence (from "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.
Relevant evidence: No