PREFIX xsd: PREFIX snvoc: PREFIX sn: PREFIX dbpedia-owl: PREFIX dbpedia: PREFIX foaf: PREFIX rdfs: select ?comment ?content ((?dt - xsd:dateTime("1970-01-01T00:00:00.000+00:00")) * 1000 as ?date) ?creator ?creatorfirstname ?creatorlastname (exists { ?creator snvoc:knows ?author} as ?knows) where { ?post snvoc:id 2061590858725 . ?post snvoc:hasCreator ?author . ?comment snvoc:replyOf ?post . { {?comment snvoc:content ?content } union { ?comment snvoc:gifFile ?content }} . ?comment snvoc:creationDate ?dt . ?comment snvoc:hasCreator ?creator . optional { ?creator snvoc:firstName ?creatorfirstname } . optional { ?creator snvoc:lastName ?creatorlastname } . } order by desc(?date) ?creator