. _:b10016 . "Scope note:\nThis class comprises identifiable immaterial items that make propositions about reality.\nThese propositions may be expressed in text, graphics, images, audiograms, videograms or by other similar means. Documentation databases are regarded as a special case of E31 Document. This class should not be confused with the term \"document\" in Information Technology, which is compatible with E73 Information Object.\n\nExamples:\n- the Encyclopaedia Britannica (E32)\n- The image content of the photo of the Allied Leaders at Yalta published by UPI, 1945 (E38)\n- the Doomsday Book\n\nIn First Order Logic:\nE31(x) \u2283 E73(x)"@en . "E31 Document"@en . _:b10016 . . _:b10016 . _:b10016 . "E31"^^ .