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History The precursor of both the Unión Argentina de Rugby and today 's Unión de Rugby de Buenos Aires , the " River Plate Rugby Union " , was founded in Buenos Aires , in 1899 , by four clubs : Buenos Aires FC , Belgrano and Lomas from Buenos Aires , and Club Atlético from Rosario .
 Unión Argentina de Rugby, Unión, Rugby, Buenos Aires, Rugby, Buenos Aires, Buenos Aires, Belgrano, Lomas, Buenos Aires, Club Atlético, Rosario
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Unión Argentina de Rugby, Unión, Rugby, Buenos Aires, Rugby, Buenos Aires, Buenos Aires, Belgrano, Lomas, Buenos Aires, Club Atlético, Rosario