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Ustaad ( Malayalam : ഉസ താദ ) is a 1999 Indian Malayalam film written by Ranjith and directed by Sibi Malayil .
 Ranjith, Sibi Malayil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ranjith, Sibi Malayil