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He is known primarily from the saga Forbhais Droma Dámhgháire , in which he is assisted by the famous Mug Ruith , who repels an invasion of his kingdom by Cormac mac Airt .
 person: Cormac mac Airt
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: Cormac mac Airt 
Answer:
 person: Cormac mac Airt