<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why is Philadelphia so filthy?
<|assistant|>
Philadelphia is so filthy because it has an aging public infrastructure, high rate of poverty and population density, lack of effective governmental control, and a culture of littering. It also doesn't help that the city is in a major flood plain, leading to excessive trash and debris following heavy rains and flooding.