Question: Which admin center of pulau Ujong is also the largest city of Pulau Ubin ?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { res:Pulau_Ubin onto:largestCity ?uri. res:Pulau_Ujong onto:capital ?uri}