Wiki Data Space PREFIX sioc: <http://rdfs.org/sioc/ns#> PREFIX sioct: <http://rdfs.org/sioc/types#> PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT DISTINCT ?nick, ?org, ?post WHERE { ?forum a sioct:Wiki . ?forum sioc:container_of ?post. optional { ?post foaf:maker ?maker }. optional { ?maker foaf:nick ?nick } . optional { ?maker foaf:organization ?org } . } Sample Data (Live Query Results) Click Here for a live SPARQL Query (via SPARQL Protocol) against a Collection of Wikis.