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As Tiberius becomes more hated by the public , he increasingly relies on his Praetorian Captain Sejanus to administer his edicts and punishments , who is able to manipulate Tiberius into suspecting that Germanicus ' wife Agrippina and his own son Castor are plotting to usurp the monarchy .
 person: Tiberius; person: Sejanus; person: Tiberius; person: Germanicus; person: Agrippina; person: Castor
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: Tiberius; person: Sejanus; person: Tiberius; person: Germanicus; person: Agrippina; person: Castor