SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/sourceLocation> <http://dbpedia.org/resource/Kingston,_Ontario> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}
What river originates in Kingston Ontario?
SELECT DISTINCT ?q WHERE { ?q rdf:type ontology:River . ?q property:source_location resource:Kingston,_Ontario }
Saint Lawrence River
The river whose source location is Kingston, Ontario is [Saint Lawrence River].
The river originates in Kingston, Ontario, it's [the St. Lawrence River].