. . "P120"^^ . "P120 occurs before"@en . . . . "Scope note:\nThis property identifies the relative chronological sequence of two temporal entities.\n\nIt implies that a temporal gap exists between the end of A and the start of B. This property is only necessary if the relevant time spans are unknown (otherwise the relationship can be calculated).\n\nThis property is the same as the \"before / after\" relationships of Allen\u2019s temporal logic (Allen, 1983, pp. 832-843).\n\nExamples:\n- Early Bronze Age (E4) occurs before Late Bronze age (E4)\n\nIn First Order Logic:\nP120(x,y) \u2283 E2(x)\nP120(x,y) \u2283 E2(y)"@en .