. . "E49 Time Appellation"@en . "E49"^^ . "Scope note:\nThis class comprises all forms of names or codes, such as historical periods, and dates, which are characteristically used to refer to a specific E52 Time-Span.\n\nThe instances of E49 Time Appellation may vary in their degree of precision, and they may be relative to other time frames, \"Before Christ\" for example. Instances of E52 Time-Span are often defined by reference to a cultural period or an event e.g. 'the duration of the Ming Dynasty'.\n\nExamples:\n- \"Meiji\" [Japanese term for a specific time-span]\n- \"1st half of the XX century\"\n- \"Quaternary\"\n- \"1215 Hegira\" [a date in the Islamic calendar]\n- \"Last century\"\n\nIn First Order Logic:\nE49(x) \u2283 E41(x)"@en .