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Thurisind seems to have given to his eldest son the rank of commander of the Gepids in the city of Sirmium as a way to guarantee his succession to the throne , as this position made him heir apparent .
 person: Thurisind
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: Thurisind 
Answer:
 person: Thurisind