SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/operator> <http://dbpedia.org/resource/Los_Angeles_World_Airports> . ?uri <http://dbpedia.org/ontology/hubAirport> ?x . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Airline>}
How many airlines have a hub at an airport run by LA World Airports?
SELECT DISTINCT COUNT ( ?j ) WHERE { ?j property:hub_airport ?e . ?j rdf:type ontology:Airline . ?e property:operator resource:Los_Angeles_World_Airports }
20
There are [20] airlines with hub airports operated by Los Angeles World Airports.
There are [20] airlines whose planes are operated by Los Angeles World Airports.
There are [20] airlines whose hub airport's operator is the organisation.
There are [20] airlines whose main airport operator is the organization.