<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 primary cause of global warming? Context: The primary cause of global warming is the increase in greenhouse gas emissions, particularly carbon dioxide from burning fossil fuels. Answer: [/INST]The primary cause of global warming is the increase in greenhouse gas emissions, particularly carbon dioxide from burning fossil fuels.</s>