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In 1947 , the singer Édith Piaf and the boxer Marcel Cerdan are both at the peak of their respective careers .
 person: Édith Piaf; person: Marcel Cerdan
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: Édith Piaf; person: Marcel Cerdan