(<= (Has-Subpart-Slot $X Elevator.Safety) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Subpart-Slot Elevator.Safety) (Inherited-Facet-Value Slot-Value-Type Elevator Elevator.Safety Safety_Beam_Model) (Inherited-Facet-Value Slot-Cardinality Elevator Elevator.Safety 1) (=> (Elevator.Safety $X $Y) (Safety_Beam_Model $Y)) (=> (Elevator.Safety $X $Y) (Elevator $X))