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Positions held He started his professional career as an English Teacher in St. Joseph School , Trivandrum and retired from Govt Service in 1971 as the Chief Editor of Malayalam Lexicon , University of Kerala , where he entered in 1953 .
 Govt, University of Kerala
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Govt, University of Kerala