Question: How many people have led agencies in German occupied Europe?
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 prop:jurisdiction <http://dbpedia.org/resource/German-occupied_Europe> . ?x onto:leader ?uri . }