. . . "X (material)"@en . "xenon"@en . "300380341" . "2014-02-28T14:29:43"^^ . "Xe (xenon)"@en . "2013-01-29T15:25:31"^^ . "A heavy inert noble gas with symbol Xe or X and atomic number of 54, used principally in lamps, lasers, and as a general anaesthetic."@en .