<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
If no one is supposed to step foot on the grass, then how did someone put the “keep off the grass”
<|assistant|>
Someone put the sign there without authorization, indicating that they do not adhere to the rule. It is likely that they assumed no one would mind or pay attention to them, since the rule is not commonly followed in this case.