VOS.TutorialREFExample5

List of all Posts

PREFIX bibo: <http://purl.org/ontology/bibo/>
PREFIX sioc: <http://rdfs.org/sioc/ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX tutorial: <http://demo.openlinksw.com/schemas/tutorial#>
SELECT *
WHERE 
  {
    ?ps a tutorial:Post .
    ?ps a foaf:Document .
    ?ps a bibo:Article .
    optional{?ps bibo:author ?author}.
    optional{?ps tutorial:belongs_to_section ?belong}.
    optional{?ps bibo:url ?url}.
   }

Sample Data (Live Query Results)

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