List of all Sections and their Posts:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sioc:   <http://rdfs.org/sioc/ns#>
prefix tutorial: <http://demo.openlinksw.com/schemas/tutorial#>
SELECT *
WHERE 
  {
    ?forum a sioc:Container .
    ?forum rdf:type tutorial:Section .
    ?forum sioc:is_container_of ?post .
   }
limit 50

Sample Data (Live Query Results)

• Click *Here* for an Interactive-Web View of Virtuoso Tutorials.
• Click *Here* for a live SPARQL Query (via SPARQL Protocol) against a collection of Virtuoso Tutorials.