Question: List the common official language of the ladonia and Empire of Atlantium ?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Ladonia_(micronation)> <http://dbpedia.org/ontology/officialLanguage> ?uri. <http://dbpedia.org/resource/Empire_of_Atlantium> <http://dbpedia.org/ontology/officialLanguage> ?uri . }