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