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He became close to Turkish President Mustafa Kemal Atatürk while serving in Ankara , which improved the relations between the two countries .
 Mustafa Kemal Atatürk, Ankara
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mustafa Kemal Atatürk, Ankara