Enumerate all the first teams of the GPs which were held in Watkins Glen, NY?
SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/location> <http://dbpedia.org/resource/Watkins_Glen,_New_York> . ?x <http://dbpedia.org/property/firstTeam> ?uri  . }
Watkins_Glen,_New_York