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Since its founding in 1994 , SLAC organizations typically have worked to educate the campus community on unions and worker struggles , organized students and broader campus communities to participate in labor solidarity activities in the U.S. and worldwide , built coalitions with local unions and social justice organizations , and trained students to work within the labor movement .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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