Question: In which city is the headquarter of Air China?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX yago: <http://dbpedia.org/class/yago/>
SELECT DISTINCT ?uri WHERE { res:Air_China onto:headquarter ?uri . ?uri a yago:City108524735 }