<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:  How many types of renewable energy sources are there? Context: There are multiple types of renewable energy sources, such as solar, wind, hydro, geothermal, and biomass. Answer: [/INST]There are several types of renewable energy sources, including solar, wind, hydro, geothermal, and biomass.</s>