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Henry Joseph O'Brien ( July 21 , 1896 – July 23 , 1976 ) was an American prelate of the Roman Catholic Church .
 Joseph O'Brien, American, Roman Catholic Church
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joseph O'Brien, American, Roman Catholic Church