Question: Who is the athletic director of the university that used to have Barry Switzer as a head coach?
Sentence (from "Oklahoma Sooners"): The 19 men's and women's varsity teams are called the "Sooners", a reference to a nickname given to the early participants in the Land Rush of 1889, which initially opened the Unassigned Lands in the future state of Oklahoma to non-native settlement.
Relevant evidence: No