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By her paternal grandmother , Isabella of Angoulême , Queen-Consort of King John of England , she was niece , in the half blood , of Henry III .
 Isabella of Angoulême, John of England, Henry III
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Isabella of Angoulême, John of England, Henry III