"2000-07-11"^^ . . . . . "2008-01-14" . "The set of tags, constructed according to RFC 1766, for the identification of languages."@en-us . . "The set of tags, constructed according to RFC 1766, for the identification of languages."@en . . "RFC 1766"@en-us . "RFC 1766"@en . "2000-07-11" .