Question: To how many places does the airlines fly, whose head office is located at the Gatwick Airport?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x onto:headquarter <http://dbpedia.org/resource/Gatwick_Airport> . ?x prop:destinations ?uri . ?uri rdf:type onto:Place}