Question: Give me a count of all ice hockey players whose teams are headcoached by John Tortorella?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:headCoach <http://dbpedia.org/resource/John_Tortorella> . ?uri onto:team ?x  . ?uri rdf:type onto:IceHockeyPlayer}