%VOSWARNING% ---+++List of all Posts and their sections: PREFIX rdf: PREFIX sioc: prefix tutorial: prefix foaf: SELECT * WHERE { ?forum rdf:type tutorial:Post . optional{?forum tutorial:belongs_to_section ?belongs_to_section}. } limit 50 ---++++Sample Data (Live Query Results) * Click [[http://demo.openlinksw.com/tutorial/][ *Here* ]] for an Interactive-Web View of Virtuoso Tutorials. * Click [[http://demo.openlinksw.com/sparql?default-graph-uri=http%3A%2F%2Fdemo.openlinksw.com%2Ftutorial_view&should-sponge=&query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0D%0APREFIX+sioc%3A+++%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0D%0Aprefix+tutorial%3A+%3Chttp%3A%2F%2Fdemo.openlinksw.com%2Fschemas%2Ftutorial%23%3E%0D%0Aprefix+foaf%3A+%3Chttp%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2F%3E%0D%0ASELECT+*%0D%0AWHERE+%0D%0A++%7B%0D%0A++++%3Fforum+rdf%3Atype+tutorial%3APost+.%0D%0A++++optional%7B%3Fforum+tutorial%3Abelongs_to_section+%3Fbelongs_to_section%7D.%0D%0A+++%7D%0D%0Alimit+50&format=text%2Fhtml&debug=on][ *Here* ]] for a live SPARQL Query (via SPARQL Protocol) against a collection of Virtuoso Tutorials.