Question: Count the movies edited by  Mark Stevens (film editor) and were directed by Joel Schumacher?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE {?uri prop:editing <http://dbpedia.org/resource/Mark_Stevens_(film_editor)> . ?uri onto:director <http://dbpedia.org/resource/Joel_Schumacher> }