<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 does photosynthesis work? Context: Photosynthesis is the process by which plants and other organisms use sunlight to produce food through chlorophyll in their chloroplasts. Answer: [/INST]Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll present in their chloroplasts.</s>