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In July 2006 , she underwent sex reassignment surgery in Phuket , Thailand , and in December 2006 , officially changed her registered gender from male to female in the koseki family registry .
 Phuket, Thailand
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Phuket, Thailand