Question: When was DBpedia released?
SPARQL:
PREFIX onto: <http://dbpedia.org/ontology/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT ?date WHERE { ?website rdf:type onto:Software . ?website onto:releaseDate ?date . ?website rdfs:label 'DBpedia'@en }