SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/settlementType> <http://dbpedia.org/resource/Provinces_of_Zambia> . ?uri <http://dbpedia.org/ontology/sourceRegion> ?x . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}
Which rivers start from the Provinces of Zambia?
SELECT DISTINCT ?j WHERE { ?a property:settlement_type resource:Provinces_of_Zambia . ?j property:source_region ?a . ?j rdf:type ontology:River }
Kafue River, Zambezi
The rivers with source region from the provinces of Zambia region are [Kafue River, Zambezi].
Upstream rivers from the provinces of the Zambia region [Kafue River, Zambezi].