Question: Name the river whose source is located in Ikelenge  District and mouth in Mozambique?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri prop:sourceLocation <http://dbpedia.org/resource/Ikelenge_District> . ?uri prop:mouthCountry <http://dbpedia.org/resource/Mozambique>  . ?uri rdf:type onto:River}