ASK WHERE { <http://dbpedia.org/resource/Owyhee_River> <http://dbpedia.org/ontology/mouthMountain> <http://dbpedia.org/resource/Oregon> }
Does the owyhee river flow into oregon?
ASK WHERE { resource:Owyhee_River property:mouth_mountain resource:Oregon }
Yes
[Yes], Oregon is the mouth mountain of Owyhee River.
[Yes], Oregon is where the Oviha River flow into.
[Yes], Oregon is  the mouth mountain of others.
[Yes] Oregon is the mummy of the rest.