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