ASK WHERE { <http://dbpedia.org/resource/Hudson_River> <http://dbpedia.org/ontology/leftTributary> <http://dbpedia.org/resource/Croton_River> }
Does the croton river flow into the hudson?
ASK WHERE { resource:Hudson_River property:left_tributary resource:Croton_River }
Yes
[Yes], the Croton River is the left tributary of the Hudson River.
[Yes], the Croton River is a left tributary of the River.
[Yes], Croton River is  the left tributary of location.
[Yes], the Croton River is the city's left tributary.