Question: Give me all Frisian islands that belong to the Netherlands.
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX yago: <http://dbpedia.org/class/yago/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?uri ?string WHERE
{
	?uri rdf:type yago:FrisianIslands .
        ?uri onto:country res:Netherlands .
	OPTIONAL { ?uri rdfs:label ?string. FILTER (lang(?string) = 'en') }
}