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Miserentissimus Redemptor is the title of an encyclical by Pope Pius XI , issued on May 8 , 1928 .
 person: Pope Pius XI
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Pope Pius XI 
Answer:
 person: Pope Pius XI