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For example , according to the United Nations geographical region classification , Southern Asia comprises the countries of Afghanistan , Bangladesh , Bhutan , India , Iran , Maldives , Nepal , Pakistan , and Sri Lanka .
 United Nations, Asia, Afghanistan, Bangladesh, Bhutan, India, Iran, Maldives, Nepal, Pakistan, Sri Lanka
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United Nations, Asia, Afghanistan, Bangladesh, Bhutan, India, Iran, Maldives, Nepal, Pakistan, Sri Lanka