To which places do the flights go by airlines headquartered in the UK?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/headquarters> <http://dbpedia.org/resource/United_Kingdom> . ?x <http://dbpedia.org/property/destinations> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Airline>}
United_Kingdom