<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 are the properties of acids and bases? Context: Acids taste sour and turn blue litmus paper red, while bases taste bitter and turn red litmus paper blue. Answer: [/INST]Acids have a sour taste and turn blue litmus paper red, while bases have a bitter taste and turn red litmus paper blue.</s>