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Indeed , in the past the pope has stirred controversy by meeting with former U . N . secretary - general Kurt Waldheim , whose activities in the Nazi era came under question , and Fidel Castro .
 organization: U . N; organization: Nazi; person: the pope; person: former U . N . secretary - general; person: former U . N . secretary - general Kurt Waldheim , whose activities in the Nazi era came under question; person: whose; person: Fidel Castro
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 organization: U . N; organization: Nazi; person: the pope; person: former U . N . secretary - general; person: former U . N . secretary - general Kurt Waldheim , whose activities in the Nazi era came under question; person: whose; person: Fidel Castro