Question: Which Francisco 49er who performed backup for "I Know What I Like" played college footbal for the University of Southern California?
Sentence (from "I Know What I Like"): Like the earlier single, "Hip to Be Square", "I Know What I Like" featured background performances by then-San Francisco 49ers, Dwight Clark, Riki Ellison, Ronnie Lott, and Joe Montana.
Relevant evidence: Yes