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According to the Orkneyinga Saga , Eystein the noisy was the son of Ivar the Uplanders ’ earl , and grandson of Halfdan the Old .
 person: Eystein; person: Halfdan the Old
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: Eystein, Halfdan the Old 
Answer:
 person: Eystein; person: Halfdan the Old