SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Duwamish_River> <http://dbpedia.org/ontology/riverMouth> ?x . ?x <http://dbpedia.org/property/cities> ?uri . }
What city is located on the mouth of Duwamish River?
SELECT DISTINCT ?y WHERE { resource:Duwamish_River property:river_mouth ?d . ?d property:cities ?y . }
Seattle
[Seattle] is located on the mouth of Duwamish River.
[Seattle] is at the mouth of the Duvamish River.