Question: Who holds stock in the railway lines ending in Washington DC?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/routeEnd> <http://dbpedia.org/resource/Union_Station_(Washington,_D.C.)> . ?x <http://dbpedia.org/property/owner> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/RailwayLine>}
Answer: The stockholder of the railway lines which end route is Washington DC are [Amtrak, Metro-North Railroad, Massachusetts, Connecticut Department of Transportation, Amtrak].