SPARQL mode PREFIX a: <http://www.w3.org/2000/10/annotation-ns#> PREFIX dc: <http://purl.org/dc/elements/1.1/> PREFIX foaf: <http://xmlns.com/foaf/0.1/> # Comment! SELECT ?given ?family WHERE { ?annot a:annotates <http://www.w3.org/TR/rdf-sparql-query/> . ?annot dc:creator ?c . OPTIONAL {?c foaf:given ?given ; foaf:family ?family } . FILTER isBlank(?c) } MIME types defined: application/x-sparql-query.
