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Augustus exchanges the exiled Postumus with a double named Clemens and secretly writes a will restoring Postumus as his heir , but Livia manages to discover this and poisons Augustus .
 person: Augustus; person: Postumus; person: Clemens; person: Postumus; person: Livia; person: Augustus
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: Augustus; person: Postumus; person: Clemens; person: Postumus; person: Livia; person: Augustus