<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:  Explain the theory of relativity. Context: The theory of relativity, proposed by Albert Einstein, describes the relationship between space and time.

3. Answer: [/INST]It is a theory proposed by Albert Einstein that describes the relationship between space and time.</s>