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In 1994 he wrote and directed his adaptation of Upamanyu Chatterjee 's 1989 novel by the same name , based on the Indian Administrative Service , English , August ( 1994 ) .
 Upamanyu Chatterjee
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Upamanyu Chatterjee