Question: What is the origin of the grape whose wine region is the Troodos Mountains ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:wineRegion <http://dbpedia.org/resource/Troodos_Mountains> . ?x onto:origin ?uri . ?x rdf:type onto:Grape}