Question: From how many different places have participants of Breeders's Cup Turf come?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/race> <http://dbpedia.org/resource/Breeders'_Cup_Turf> . ?x <http://dbpedia.org/property/birthPlace> ?uri  . }
Answer: There are [32] birthplaces of the people who contested at Breeders' Cup Turf.