Question: What are the airlines whose hub airport is operated by the Los Angeles World Airports?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:operator <http://dbpedia.org/resource/Los_Angeles_World_Airports> . ?uri onto:hubAirport ?x . ?uri rdf:type onto:Airline}