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