Question: What is the common country of Ganz UV and Balaton wine region ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Ganz_UV> <http://dbpedia.org/ontology/operator> ?uri. <http://dbpedia.org/resource/Balaton_wine_region> <http://dbpedia.org/ontology/location> ?uri}