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Leung Fu-wah , BBS , MH , JP ( born 21 October 1951 , Hong Kong ) is a trade unionist and vice-chairman of the Hong Kong Federation of Trade Unions .
 Hong Kong, Hong Kong Federation of Trade Unions
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hong Kong, Hong Kong Federation of Trade Unions