Question: Which operator of ganz UV is also the nationality of the Gza Horvth ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Ganz_UV> <http://dbpedia.org/ontology/operator> ?uri. <http://dbpedia.org/resource/Géza_Horváth> <http://dbpedia.org/ontology/nationality> ?uri}