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According to John Morley , who wrote about Vatican diplomacy during the Holocaust , " one of the principal concerns of the Vatican , especially in the early days of the war , was those Jews who had converted to Catholicism , the so-called Catholic or Christian non-Aryans " .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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