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With the nickname Jules Burgmein , Ricordi contributed a very great deal to the prestige of the Casa Ricordi , publishing company of his family .
 Ricordi, Casa Ricordi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ricordi, Casa Ricordi