13.4 This exercise involves the use of POP to actually fix a flat tire (in simulation).

a. Build an environment simulator for the flat-tire world. Your simulator should be able to update the state of the environment according to the actions taken by the agent. The easiest way to do this is to take the postconditions directly from the operator descriptions and use TELL and RETRACT to update a logical knowledge base representing the world state.

b. Implement a planning agent for your environment, and show that it fixes the tire.