. . "Scope note:\nThis class comprises specific forms of E49 Time Appellation.\n\nDates may vary in their degree of precision.\n\nExamples:\n- \"1900\"\n- \"4-4-1959\"\n- \"19-MAR-1922\"\n- \"19640604\"\n\nIn First Order Logic:\nE50(x) \u2283 E49(x)"@en . "E50 Date"@en . "E50"^^ .