What is the {regional organization} for {official language} of {Romanian}
Which regional organization includes Romanian as an official language?
SELECT DISTINCT ?t WHERE { ?t property:official_language resource:Romanian . ?t rdf:type ontology:regional_organization }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P37> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q7913> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q4120211> } 
 select distinct ?sbj where { ?sbj wdt:P37 wd:Q7913 . ?sbj wdt:P31 wd:Q4120211 } 
European Union