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American Nate Miller successfully defended his WBA cruiserweight title when he knocked out compatriot James Heath in the seventh round of their bout on Saturday .
 person: James Heath; else: American; organization: WBA; person: Nate Miller
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 person: James Heath; else: American; organization: WBA; person: Nate Miller