Question: What is the name of the rivalry game that is played in the same stadium as the State Fair Classic, thats name is derived from the river that forms part of the boundary between Texas and Oklahoma?
Sentence (from "Red River Showdown"): The Red River Showdown, commonly called the Red River Rivalry, the Red River Classic, or the Red River Shootout, is an American college football rivalry game played annually at the Cotton Bowl stadium in Dallas, Texas, during the second weekend of the State Fair of Texas in October.
Relevant evidence: Yes