Question: Which source of river Raa is the sovereign state of Adriatic sea ?
SPARQL query: SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Raša_(river)> <http://dbpedia.org/ontology/source> ?uri. <http://dbpedia.org/resource/Adriatic_Sea> <http://dbpedia.org/ontology/country> ?uri}
Answer: [Croatia] is the source of river Raa and the country of the Adriatic Sea.