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He was the Ceylon 's Ambassador to Australia and former Director General of the Department of Foreign Affairs , Ministry of External Affairs and Defence .
 Ceylon, Australia, Affairs, Ministry of External Affairs and Defence
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ceylon, Australia, Affairs, Ministry of External Affairs and Defence