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In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Channa Mohallah is a town in Jacobabad in Sindh, Pakistan. Most residents belong to the Channa Caste. 50% or more of the population are of Channa caste; it is the most popular area in Jacobabad for the caste. The main places also in Channa Mohallah are the power grid station and Shah Abdul Latif Bhitai Stadium Ground. Also nearby is Shahbaz Air Base. Now there is a big project under construction J.I.M.C.: the Jacobabad institute of Medical Sciences. Question: What is the name of the form of social stratification characterized by customary social interaction and exclusion and have a large population from Channa Mohallah? Answer: caste
Output:
Channa Mohallah is a town in Jacobabad in Sindh, Pakistan.