Question: Who is the builder of the bridge owned by Tabriz ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/owner> <http://dbpedia.org/resource/Tabriz> . ?x <http://dbpedia.org/ontology/builder> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Bridge>}