<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 concept of social stratification in sociology? Context: Social stratification in sociology involves classifying individuals into different social strata based on various factors like wealth, income, and occupation. Answer: [/INST]Social stratification refers to a society's categorization of people into socioeconomic strata, based on factors like wealth, income, social status, occupation, and power.</s>