SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/sourceMountain> <http://dbpedia.org/resource/Baikal_Mountains> . ?uri <http://dbpedia.org/ontology/riverMouth> <http://dbpedia.org/resource/Lena_Delta_Wildlife_Reserve> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}
Which river's source mountain is Baikal Mountains and it's mouth is Lena Delta Wildlife Reserve?
SELECT DISTINCT ?o WHERE { ?o property:river_mouth resource:Lena_Delta_Wildlife_Reserve . ?o rdf:type ontology:River . ?o property:source_mountain resource:Baikal_Mountains }
Lena River
[Lena River] is the river whose source mountain is Baikal Mountains and mouth is Lena Delta Wildlife Reserve.
[Lena river] is a river whose starting point is the Babaal Mountains and whose mouth is the Delta Reserve.