question: Which person portrayed Knute Rockne in the 1940 movie `` Knute Rockne ? ''
answer: Pat O'Brien
turker_answer: Pat O'Brien portrayed Knute Rockne in the 1940 movie `` Knute Rockne '' .
rule-based: Pat O'Brien portrayed Knute Rockne in the 1940 movie `` Knute Rockne . ''