What is the {airport} for {place served by transport hub} of {Belgrade}
Belgrade's Airport is called what?
WHat is the name of the Belgrade Airport ?
SELECT DISTINCT ?w WHERE { ?w property:place_served_by_transport_hub resource:Belgrade . ?w rdf:type ontology:airport }
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/P931> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q3711> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1248784> } 
 select distinct ?sbj where { ?sbj wdt:P931 wd:Q3711 . ?sbj wdt:P31 wd:Q1248784 } 
Belgrade Nikola Tesla Airport Lisičji Jarak Airport Progar Airport