Question: The Kennedy Center Friedheim prize is awarded by a performing arts center located on which river?
Sentence (from "John F. Kennedy Center for the Performing Arts"): The John F. Kennedy Center for the Performing Arts (formally called the John F. Kennedy Memorial Center for the Performing Arts, and commonly referred to as the Kennedy Center) is a performing arts center located on the Potomac River, adjacent to the Watergate complex in Washington, D.C.
Relevant evidence: Yes