<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 is sustainable urban planning? Context: Sustainable urban planning aims to create environmentally friendly, economically viable, and socially equitable cities. Answer: [/INST]Sustainable urban planning focuses on creating cities that are environmentally friendly, economically viable, and socially equitable.</s>