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Rugby union in the Republic of the Congo is a minor but growing sport Governing body The national union is a member of the Confederation of African Rugby , but not of the International Rugby Board .
 Rugby, Republic of the Congo, Confederation of African Rugby, International Rugby Board
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rugby, Republic of the Congo, Confederation of African Rugby, International Rugby Board