<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 causes the seasons on Earth? Context: The seasons on Earth are caused by the tilt of Earth's axis. Answer: [/INST]The tilt of Earth's axis.</s>