What is the {railway station} for {owned by} of {Amtrak}
What is Amtrak's railway station?
What is the railway station owned by Amtrak?
SELECT DISTINCT ?w WHERE { ?w rdf:type ontology:railway_station . ?w property:owned_by resource:Amtrak }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P127> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q23239> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q55488> } 
 select distinct ?sbj where { ?sbj wdt:P127 wd:Q23239 . ?sbj wdt:P31 wd:Q55488 } 
30th Street Station North Philadelphia station Oakland Coliseum station Fair Haven Louise M. Slaughter Rochester Station San Clemente Pier station Pennsylvania Station Cleveland Lakefront station Albion station Alliance Ann Arbor station Ardmore BWI Rail Station Bowie State Bryn Mawr station Dade City Atlantic Coast Line Railroad Depot Daylesford Devon Downingtown Edgewood station Elyria Exton Halethorpe Hammond–Whiting station Harrisburg Transportation Center Haverford Huntingdon Malvern Martin State Airport station Merion Narberth New Buffalo Newark Odenton Overbrook Paoli Perryville Providence station Radnor Richmond Staples Mill Road station Route 128 station Seabrook St. Davids Strafford Taylor Thorndale Union Station Villanova Wayne Whitford Wilmington station Windsor station Wynnewood Berwyn Rosemont Pennsylvania Station