. . . "Scope note:\nThis property shows the type of unit an E54 Dimension was expressed in.\n\nExamples:\n- height of silver cup 232 (E54) has unit mm (E58)\n\nIn First Order Logic:\nP91(x,y) \u2283 E54(x)\nP91(x,y) \u2283 E58(y)"@en . . "P91 has unit"@en . "P91"^^ .