<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 an earthquake? Context: An earthquake is the shaking of the Earth's surface caused by a sudden release of energy in the lithosphere, resulting in seismic waves. Answer: [/INST]An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.</s>