---+++Wiki Applications Data Space PREFIX rdf: PREFIX atom: PREFIX sioc: PREFIX sioct: SELECT DISTINCT ?title, ?date WHERE { ?forum rdf:type sioct:Wiki . ?forum sioc:container_of ?post. optional { ?post atom:title ?title } . optional { ?post atom:published ?date } . } ---+++++Sample Data (Live Query Results) * View Query Results [[http://demo.openlinksw.com/sparql?default-graph-uri=&should-sponge=&query=PREFIX+rdf%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0D%0APREFIX+atom%3A+%3Chttp%3A%2F%2Fatomowl.org%2Fontologies%2Fatomrdf%23%3E%0D%0APREFIX+sioc%3A+%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0D%0APREFIX+sioct%3A+%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Ftypes%23%3E%0D%0ASELECT+DISTINCT+%3Ftitle%2C+%3Fdate%0D%0AWHERE%0D%0A++%7B%0D%0A++++%3Fforum+rdf%3Atype+sioct%3AWiki++.%0D%0A++++%3Fforum+sioc%3Acontainer_of+%3Fpost.%0D%0A++++optional+%7B+%3Fpost+atom%3Atitle+%3Ftitle+%7D+.%0D%0A++++optional+%7B+%3Fpost+atom%3Apublished+%3Fdate+%7D+.++++++++%0D%0A++%7D&format=text%2Fhtml&debug=on][(via SPARQL Protocol URL)]] * View Query Results [[http://demo.openlinksw.com/view/?format=application%2Frdf%2Bxml&maxrows=50&query=%0APREFIX%20rdf%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX%20atom%3A%20%3Chttp%3A%2F%2Fatomowl.org%2Fontologies%2Fatomrdf%23%3E%0APREFIX%20sioc%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0APREFIX%20sioct%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Ftypes%23%3E%0ASELECT%20DISTINCT%20%3Ftitle%2C%20%3Fdate%0AWHERE%0A%20%20%7B%0A%20%20%20%20%3Fforum%20rdf%3Atype%20sioct%3AWiki%20%20.%0A%20%20%20%20%3Fforum%20sioc%3Acontainer_of%20%3Fpost.%0A%20%20%20%20optional%20%7B%20%3Fpost%20atom%3Atitle%20%3Ftitle%20%7D%20.%0A%20%20%20%20optional%20%7B%20%3Fpost%20atom%3Apublished%20%3Fdate%20%7D%20.%20%20%20%20%20%20%20%20%0A%20%20%7D&endpoint=/sparql&maxrows=50&default-graph-uri=][(via iSPARQL Results URL)]] * View Query Editor [[http://demo.openlinksw.com/isparql/?query=PREFIX%20rdf%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX%20atom%3A%20%3Chttp%3A%2F%2Fatomowl.org%2Fontologies%2Fatomrdf%23%3E%0APREFIX%20sioc%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0APREFIX%20sioct%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Ftypes%23%3E%0ASELECT%20DISTINCT%20%3Ftitle%2C%20%3Fdate%0AWHERE%0A%20%20%7B%0A%20%20%20%20%3Fforum%20rdf%3Atype%20sioct%3AWiki%20%20.%0A%20%20%20%20%3Fforum%20sioc%3Acontainer_of%20%3Fpost.%0A%20%20%20%20optional%20%7B%20%3Fpost%20atom%3Atitle%20%3Ftitle%20%7D%20.%0A%20%20%20%20optional%20%7B%20%3Fpost%20atom%3Apublished%20%3Fdate%20%7D%20.%20%20%20%20%20%20%20%20%0A%20%20%7D&endpoint=/sparql&maxrows=50&default-graph-uri=][(via iSPARQL Visual Query Editor URL)]]