Question: Which organizations were founded in 1950?
SPARQL:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX onto: <http://dbpedia.org/ontology/> PREFIX prop: <http://dbpedia.org/property/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT ?uri ?string WHERE { ?uri rdf:type onto:Organisation . ?uri prop:foundation ?date . FILTER regex(?date,'^1950') . OPTIONAL {?uri rdfs:label ?string . FILTER (lang(?string) = 'en') } }