(<= (Has-Parameter-Slot $X Car_Buffer_Blocking_Height) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Parameter-Slot Car_Buffer_Blocking_Height) (Inherited-Facet-Value Slot-Value-Type Elevator Car_Buffer_Blocking_Height Integer) (Inherited-Facet-Value Slot-Cardinality Elevator Car_Buffer_Blocking_Height 1)