(<= (Has-Parameter-Slot $X Door_Space) (Door_Model $X)) (Inherited-Slot-Value Door_Model Has-Parameter-Slot Door_Space) (Inherited-Facet-Value Slot-Value-Type Door_Model Door_Space Real-Number) (Inherited-Facet-Value Slot-Cardinality Door_Model Door_Space 1) (<= (Has-Parameter-Slot $X Door_Space) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Parameter-Slot Door_Space) (Inherited-Facet-Value Slot-Value-Type Elevator Door_Space Real-Number) (Inherited-Facet-Value Slot-Cardinality Elevator Door_Space 1)