'(=< (Machine_Groove_Pressure ?X) (Machine_Groove_Pressure_Acceptable_Maximum ?X))
(<= (Has-Constraint $X C-31) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Constraint C-31) (Used-In-Constraint Machine_Groove_Pressure_Acceptable_Maximum C-31) (Used-In-Constraint Machine_Groove_Pressure C-31)