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Thupden Bhutia ( born 06 January 1987 ) is an Indian footballer playing for United Sikkim .
 Thupden Bhutia, United Sikkim
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Thupden Bhutia, United Sikkim