ASK WHERE { <http://dbpedia.org/resource/Pulau_Ubin> <http://dbpedia.org/ontology/largestCity> <http://dbpedia.org/resource/Singapore> }
Is Pulau Ubin the largest city of Singapore?
ASK WHERE { resource:Pulau_Ubin property:largest_city resource:Singapore }
Yes
[Yes], Singapore is the largest city of Pulau Ubin.
[Yes] Singapore is the biggest city in Pubin.