. _:vb50999587 "2008-05-xx" . _:vb50999587 . "2008-05-xx" . "preferred label"@en . _:vb50999587 . _:vb50999587 "Sean Bechhofer" . . "No two concepts in the same concept scheme may have the same value for skos:prefLabel in a given language."@en . . "The range of skos:prefLabel is the class of RDF plain literals."@en . "The preferred lexical label for a resource, in a given language."@en . _:vb50999587 "Initial description." . . "skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties."@en . .