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Charles Emmanuel IV of Sardinia ( 13 July 1807 – 6 October 1819 ) , descended from the youngest daughter of Charles I .
 Charles Emmanuel IV of Sardinia, Charles I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Charles Emmanuel IV of Sardinia, Charles I