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Margaret , Countess of Vertus ( French : Marguerite d'Orléans ) , was born on 4 December 1406 .
 Countess, Vertus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Countess, Vertus