Question: How many teams have used the stadiums which have been rented by the Canadian Hockey Association?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x onto:tenant <http://dbpedia.org/resource/Hockey_Canada> . ?x prop:tenants ?uri . }