Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To achieve the goal state, car2 must be clear (Curb_1 having car2 only). We can move car1 to Curb_3 first. Set Curb_3 to car1 using "move-car-to-curb", freeing Curb_1 and clearing car2.

New State Description:
Curb_0 contains car_0, clear. Curb_1 contains car_2, clear. Curb_2 contains car_3, clear. Curb_3 contains car_1, clear.

Action Chosen:
(move-car-to-curb car_1 car_2 curb_3)
