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SEOUL , South Korea ( AP ) _ Two major South Korean labor groups rallied about 15 , 000 workers in central Seoul on Sunday to protest government - led corporate restructuring they fear will lead to mass layoffs .
 SEOUL , South Korea, South Korea, South Korean, government, AP, Two major South Korean labor groups, corporate, they, labor, about 15 , 000 workers in central Seoul, central Seoul
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 SEOUL , South Korea, South Korea, South Korean, government, AP, Two major South Korean labor groups, corporate, they, labor, about 15 , 000 workers in central Seoul, central Seoul