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Also that spring she participated in a twenty-fifth anniversary studio recording of " Pins and Needles , " the classic popular front musical originated in 1937 by the International Ladies ' Garment Workers ' Union .
 International Ladies ' Garment Workers ' Union
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 International Ladies ' Garment Workers ' Union