<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 definition of a right triangle? Context: A right triangle is a triangle with one 90-degree angle. Answer: [/INST]A triangle with one 90-degree angle.</s>