Through which cities do the rivers starting at the Montauk State Park flow?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/sourcePlace> <http://dbpedia.org/resource/Montauk_State_Park> . ?x <http://dbpedia.org/ontology/city> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}
Montauk_State_Park