<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What are some causes of air pollution? Context: Air pollution is caused by vehicle emissions, industrial activities, and burning of fossil fuels. Answer: [/INST]Some causes of air pollution include vehicle emissions, industrial activities, and burning of fossil fuels.</s>