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The Players Association 's filed a grievance on his behalf , for which an arbitrator ruled that the team violated its contract , opening the possibility for a trade .
 organization: Players Association
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 organization: Players Association