"---+++Polls Post Tags \n\nPREFIX rdf: \nPREFIX sioc: \nPREFIX sioct: \nPREFIX skos: \nSELECT DISTINCT ?tag ?topic\nWHERE \n {\n ?forum a sioct:SurveyCollection.\n ?forum sioc:container_of ?post.\n optional{?post sioc:topic ?topic .\n ?topic rdf:type skos:Concept .\n ?topic skos:prefLabel ?tag }\n }\n\n\n---+++++Sample Data (Live Query Results)\n * Click [[http://demo.openlinksw.com/sparql?default-graph-uri=http%3A%2F%2Fdemo.openlinksw.com%2Fdataspace&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+sioct%3A+%3Chttp%3A%2F%2Frdfs.org%2Fsioc%2Ftypes%23%3E%0D%0APREFIX+skos%3A+%3Chttp%3A%2F%2Fwww.w3.org%2F2004%2F02%2Fskos%2Fcore%23%3E%0D%0ASELECT+DISTINCT+%3Ftag+%3Ftopic%0D%0AWHERE+%0D%0A++%7B%0D%0A++++%3Fforum+a+sioct%3ASurveyCollection.%0D%0A++++%3Fforum+sioc%3Acontainer_of+%3Fpost.%0D%0A++++optional%7B%3Fpost+sioc%3Atopic+%3Ftopic+.%0D%0A+++++++++++++++++%3Ftopic+rdf%3Atype+skos%3AConcept+.%0D%0A+++++++++++++++++%3Ftopic+skos%3AprefLabel+%3Ftag+%7D%0D%0A++++++%7D&format=text%2Fhtml][Here]] for a live SPARQL Query (via SPARQL Protocol) against a collection of polls posts." . . "2017-06-13T05:44:31.244151"^^ . "2017-06-13T05:44:31Z" . . . "2017-06-13T05:44:31.244151"^^ . . . "e3a03ddb43238955835b5c7fe9c6fcd3" . "2017-06-13T05:44:31Z" . . "ODSSKOSRefExamplePolls" . "ODSSKOSRefExamplePolls" . . . . . "ODSSKOSRefExamplePolls" . . . . .