Question:  U.S. Route 60 in Oklahoma runs through a city that is the county seat of what county?
Sentence (from "U.S. Route 60 in Oklahoma"): The highway crosses into the state from Texas west of Arnett and serves many towns and cities in the northern part of the state, including Arnett, Seiling, Fairview, Enid, Ponca City, Pawhuska, Bartlesville, and Vinita.
Relevant evidence: Yes