Question: What was the name of the home stadium the two-time Walter Camp Coach of the Year Award Winner Bob Stoops in his sixth season as head coach? It is located in the third-largest city in Oklahoma.
Sentence (from "2015 Oklahoma Sooners football team"): The 2015 Oklahoma Sooners football team represented the University of Oklahoma in the 2015 NCAA Division I FBS football season, the 121st season of Sooner football.
Relevant evidence: No