Question: Which European sea has Oulu as one of the shore city ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri onto:location <http://dbpedia.org/resource/Europe> . ?uri prop:cities <http://dbpedia.org/resource/Oulu>  . ?uri rdf:type onto:Sea}