<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: In sociology, social stratification is a concept that categorizes people into different socioeconomic tiers based on various factors like wealth, income, race, education, and power. Answer: [/INST]Social stratification refers to a society's categorization of its people into rankings of socioeconomic tiers based on factors like wealth, income, race, education, and power.</s>