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Amadeus VIII ( 4 September 1383 , Chambéry – 7 January 1451 ) was the son of Amadeus VII , Count of Savoy and Bonne of Berry .
 Amadeus, Chambéry, Amadeus VII , Count of Savoy, Bonne of Berry
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Amadeus, Chambéry, Amadeus VII , Count of Savoy, Bonne of Berry