Question: Give me an estimate number of races where horses grandsired by the Wild Risk have raced in?
SPARQL:
SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/grandsire> <http://dbpedia.org/resource/Wild_Risk> . ?x <http://dbpedia.org/property/race> ?uri  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/HorseRace>}