---+++List of all Containers PREFIX bibo: PREFIX rdf: PREFIX sioc: SELECT * FROM WHERE { ?forum a sioc:Container . OPTIONAL { ?forum bibo:author ?author } . OPTIONAL { ?forum bibo:identifier ?identifier } . } ---++++Sample Data (Live Query Results) * View Query Results [[http://demo.openlinksw.com/sparql?default-graph-uri=&should-sponge=&query=PREFIX+bibo%3A+%3Chttp%3A%2F%2Fpurl.org%2Fontology%2Fbibo%2F%3E%0D%0APREFIX+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%0ASELECT+*%0D%0AFROM+%3Chttp%3A%2F%2Fdemo.openlinksw.com%2FDoc%3E%0D%0AWHERE%0D%0A++%7B%0D%0A++++%3Fforum+a+sioc%3AContainer+.%0D%0A++++OPTIONAL+%7B+%3Fforum+bibo%3Aauthor+%3Fauthor+%7D+.+%0D%0A++++OPTIONAL+%7B+%3Fforum+bibo%3Aidentifier+%3Fidentifier+%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%20bibo%3A%20%3Chttp%3A%2F%2Fpurl.org%2Fontology%2Fbibo%2F%3E%0APREFIX%20rdf%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX%20sioc%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0ASELECT%20*%0AFROM%20%3Chttp%3A%2F%2Fdemo.openlinksw.com%2FDoc%3E%0AWHERE%0A%20%20%7B%0A%20%20%20%20%3Fforum%20a%20sioc%3AContainer%20.%0A%20%20%20%20OPTIONAL%20%7B%20%3Fforum%20bibo%3Aauthor%20%3Fauthor%20%7D%20.%20%0A%20%20%20%20OPTIONAL%20%7B%20%3Fforum%20bibo%3Aidentifier%20%3Fidentifier%20%7D%20.%0A%20%20%20%7D&endpoint=/sparql&maxrows=50&default-graph-uri=][(via iSPARQL Results URL)]] * View Query Editor [[http://demo.openlinksw.com/isparql/?query=PREFIX%20bibo%3A%20%3Chttp%3A%2F%2Fpurl.org%2Fontology%2Fbibo%2F%3E%0APREFIX%20rdf%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX%20sioc%3A%20%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Fns%23%3E%0ASELECT%20*%0AFROM%20%3Chttp%3A%2F%2Fdemo.openlinksw.com%2FDoc%3E%0AWHERE%0A%20%20%7B%0A%20%20%20%20%3Fforum%20a%20sioc%3AContainer%20.%0A%20%20%20%20OPTIONAL%20%7B%20%3Fforum%20bibo%3Aauthor%20%3Fauthor%20%7D%20.%20%0A%20%20%20%20OPTIONAL%20%7B%20%3Fforum%20bibo%3Aidentifier%20%3Fidentifier%20%7D%20.%0A%20%20%20%7D&endpoint=/sparql&maxrows=50&default-graph-uri=][(via iSPARQL Visual Query Editor URL)]]