What all are in the states whose anthem is Ja, vi esker dette landet?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/anthem> <http://dbpedia.org/resource/Ja,_vi_elsker_dette_landet> . ?uri <http://dbpedia.org/ontology/country> ?x  . }
Ja,_vi_elsker_dette_landet