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At the time Khosrau was an exiled prince who sought assistance from Maurice to claim the throne against Bahrām Chobin .
 person: Khosrau; person: Maurice; person: Bahrām Chobin
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: Khosrau, Maurice, Bahrām Chobin 
Answer:
 person: Khosrau; person: Maurice; person: Bahrām Chobin