Question: Count the different alma maters of people employed by the CNN?
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:employer <http://dbpedia.org/resource/CNN> . ?x onto:almaMater ?uri . }