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 name is derived from the Red River that forms part of the boundary between Texas and Oklahoma that has in the past caused conflict between the two states, most notably the 1931 Red River Bridge War.
Relevant evidence: Yes