SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Äuá»‘ng_River> <http://dbpedia.org/ontology/sourceCountry> ?uri . }
In which country is the Duong river?
SELECT DISTINCT ?z WHERE { resource:Äuá»‘ng_River property:source_country ?z . }
Vietnam
The source country of Duong river is [Vietnam].
The origin country on the Duong River is [Vietnam].