ASK WHERE { <http://dbpedia.org/resource/Silver_Airways> <http://dbpedia.org/ontology/hubAirport> <http://dbpedia.org/resource/Washington_Dulles_International_Airport> }
Does Silver Airways have a hub at the Washington Dulles International Airport?
ASK WHERE { resource:Silver_Airways property:hub_airport resource:Washington_Dulles_International_Airport }
Yes
[Yes], Washington Dulles International Airport is the hub airport of Silver Airways.
[Yes] Dulles International Airport in Washington is the hub of Silver Airways.
[Yes], Washington Dulles International Airport is  the hub airport of the organisation.
[Yes] Dulles International Airport in Washington is the organization's hub airport.