Question: The Kennedy Center Friedheim prize is awarded by a performing arts center located on which river?
{'answer': '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', 'supporting_facts': [['Stephen Paulus', 3], ['John F. Kennedy Center for the Performing Arts', 0]]}