Question: What river originates in the Connecticut Lakes?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/source> <http://dbpedia.org/resource/Connecticut_Lakes> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}