<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 deepest part of the ocean? Context: The deepest part of the ocean is the Mariana Trench. Answer: [/INST]The Mariana Trench.</s>