What is the {airline} for {item operated} of {DC-3}
DC-3 is worked by which airline?
DC-3 is operated by which airline?
SELECT DISTINCT ?l WHERE { ?l rdf:type ontology:airline . ?l property:item_operated resource:DC-3 }
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/P121> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q190211> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q46970> } 
 select distinct ?sbj where { ?sbj wdt:P121 wd:Q190211 . ?sbj wdt:P31 wd:Q46970 } 
Aer Lingus Air France Sabena LOT Polish Airlines TAP Air Portugal Aerotransport Air Rhodesia Itavia Trans World Airlines Texas International Airlines Norwegian Air Lines Swissair Austrian Airlines Aviaco Bavaria Fluggesellschaft British Overseas Airways Corporation Middle East Airlines British European Airways East African Airways Alyemda TAME Western Airlines Panair do Brasil Linjeflyg Mey-Air Spantax Avio Linee Italiane Pacific Western Airlines Det Danske Luftfartselskab Rousseau Aviation Royal Air Cambodge LAI Linee Aeree Italiane Società Aerea Mediterranea Fred. Olsens Flyselskap Aerovías Quisqueyana Air Anglia Airwork Services British Aviation Services Butler Air Transport Flota Aerea Mercante Argentina Jersey Airlines Lebanese International Airways Modern Air Transport SAHSA Silver City Airways Skyways Limited Starways TAE Greek National Airlines Transports Aériens Intercontinentaux West African Airways Corporation Československá letecká společnost BKS Air Transport Compagnie Air Transport United Arab Airlines Air Jordan Tor-Air Bergen Air Transport JAT – Jugoslovenski Aerotransport Autair Olympic Airways Misrair Uni-Air William Dempster (airline) Surrey Flying Services Air Links Union of Burma Airways Burma Airways Societa Italiane Servizi Aerei – SISA Transadriatica Taxi Aéreo El Venado Pan Am Cathay Pacific American Airlines