<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 a stethoscope used for? Context: A stethoscope is a tool used by healthcare professionals to listen to internal organ sounds. Answer: [/INST]A stethoscope is used by healthcare professionals to listen to the sounds made by the heart, lungs, and other internal organs.</s>