<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How do you prevent someone from parking in a reserved parking spot, that has a sign posted?
<|assistant|>
If there is a reserved parking spot with a sign indicating as much, the best way to prevent unauthorized parking is to contact the local police, who can ticket those parking in an unauthorized spot. Additionally, you can station a person at the spot to monitor the area, or place large stones or other objects in the spot to prevent vehicles from parking there.  You can also install surveillance cameras in the area to identify and penalize individuals who are not authorized to park there.