"The range of skos:prefLabel is the class of RDF plain literals."@en . "A resource has no more than one value of skos:prefLabel per language tag, and no more than one value of skos:prefLabel without language tag."@en . . . "skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise\n disjoint properties."@en . . . . "The preferred lexical label for a resource, in a given language."@en . "preferred label"@en .