Question: What is a 1940 biographical film which tells the story of Knute Rockne, Notre Dame football coach, and stars  Pat O'Brien portraying the role of Rockne and Ronald Reagan as player nicknamed "The Gipper" who was selected as Notre Dame's first Walter Camp All-American ?
Sentence (from "Knute Rockne, All American"): It also includes cameos by legendary football coaches "Pop" Warner, Amos Alonzo Stagg, William H. Spaulding, and Howard Jones, playing themselves.
Relevant evidence: No