Question: On which river are there things belonging to zambezi river authority?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/owner> <http://dbpedia.org/resource/Zambezi_River_Authority> . ?x <http://dbpedia.org/ontology/river> ?uri  . }
Answer: The river of the things owned by Zambezi River Authority is [Zambezi].