<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:  When did the dinosaurs go extinct ? Context: The dinosaurs went extinct around 65 million years ago. Answer: [/INST]Around 65 million years ago.</s>