Question: What work has been directed by Orson Welles and distributed by  RKO Pictures?
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 ?uri WHERE {?uri prop:director <http://dbpedia.org/resource/Orson_Welles> . ?uri prop:distributor <http://dbpedia.org/resource/RKO_Pictures>  . ?uri rdf:type onto:Work}