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