<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 main types of social stratification in society? Context: The main types of social stratification in society are slavery, caste, class, and estate. Answer: [/INST]The main types of social stratification are slavery, caste, class, and estate.</s>