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The affair has been doubted by some historians , since Messalina had clear political motives for getting rid of Julia Livilla and her supporters .
 person: Messalina; person: Julia Livilla
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Messalina, Julia Livilla 
Answer:
 person: Messalina; person: Julia Livilla