Question: Zema Williams is in a number of television commercials with a former American football running back who played college football where? 
Sentence (from "Clinton Portis"): Portis was best known for being the starting running back for the Washington Redskins for seven seasons, in which he gained an average of 81.2 yards rushing per game, for which a select panel of celebrities included him as one of the 80 Greatest Redskins.
Relevant evidence: No