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Internationally , the World Pool-Billiard Association and the World Eightball Pool Federation both publish rules and promote events .
 World Pool-Billiard Association, World Eightball Pool Federation
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 World Pool-Billiard Association, World Eightball Pool Federation