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Singers : Lucia Popp , Hermann Prey , John van Kesteren .
 person: Lucia Popp; person: Hermann Prey; person: John van Kesteren
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Lucia Popp; person: Hermann Prey; person: John van Kesteren