List the magazines published by Playboy Enterprises ?
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/publisher> <http://dbpedia.org/resource/Playboy_Enterprises>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Magazine>}
Playboy_Enterprises