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Jato ( Devanagari : जाँतो ) is a form of grinder in the Himalayan region of Nepal , Sikkim , Darjeeling , Bhutan , which is made of up of stone .
 Nepal, Sikkim, Darjeeling, Bhutan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nepal, Sikkim, Darjeeling, Bhutan