<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 the Earth's outer layer called? Context: The Earth's outer layer is known as the crust. Answer: [/INST]The Earth's outer layer is called the crust.</s>