'(= (Counterweight_System_Weight ?X) (+ (Counterweight_Frame_Weight ?X) (* 4 7)))
(<= (Has-Constraint $X Counterweight_System_Weight_C) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Constraint Counterweight_System_Weight_C) (Used-In-Constraint Counterweight_Frame_Weight Counterweight_System_Weight_C) (Used-In-Constraint Counterweight_System_Weight Counterweight_System_Weight_C)