Sans nom

CONSTRUCT {
  ?channel rdf:type sioc:Forum .
  ?channel sioc:link ?channel_url .
  ?channel dc:title ?channel_title .
  ?channel dc:description ?channel_description .
  ?channel sioc:container_of ?item .
  ?item rdf:type sioc:Post .
  ?item sioc:link ?item_url .
  ?item dc:title ?item_title .
  ?item dcterms:created ?item_created .
  ?item sioc:content ?item_content .
  ?item content:encoded ?item_content_encoded .
  ?item dc:subject ?item_subject
}
WHERE {
  ?channel rdf:type rss:channel .
  ?channel rss:link ?channel_url .
  ?channel rss:title ?channel_title .
  ?channel rss:description ?channel_description .
  ?channel rss:items ?items .
  ?items ?li ?item .
  ?item rdf:type rss:item .
  ?item rss:link ?item_url .
  ?item rss:title ?item_title .
  ?item dc:date ?item_created .
  ?item rss:description ?item_content .
  ?item content:encoded ?item_content_encoded
  OPTIONAL {
    ?item dc:subject ?item_subject 
  }
}