Question: Who are the members of organizations headquartered at Amstelveen?
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 { ?x prop:headquarters <http://dbpedia.org/resource/Amstelveen> . ?x prop:membership ?uri . ?x rdf:type onto:Organisation}