"Scope note:\nThis property associates an instance of E4 Period with another instance of E4 Period that is defined by a subset of the phenomena that define the former. Therefore the spacetime volume of the latter must fall\nwithin the spacetime volume of the former.\nThis property is transitive.\n\n\nExamples:\n- Cretan Bronze Age (E4) consists of Middle Minoan (E4)\n\nIn First Order Logic:\nP9(x,y) \u2283 E4(x)\nP9(x,y) \u2283 E4(y)\nP9(x,y) \u2283 P10(y,x)"@en . "P9"^^ . . . . . . "P9 consists of"@en . .