Question: How many contries surround the seas on the banks of which is the city of Cancun?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:cities <http://dbpedia.org/resource/Cancún> . ?x onto:country ?uri  . }