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Morgenlien was involved in the trade union , which in 1988 merged to form the United Federation of Trade Unions .
 Morgenlien, United 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:
 Morgenlien, United Federation of Trade Unions