100022
Thus , according to O'Rahilly , he is present to divinely represent the Érainn in a marriage to the Eóganachta .
 person: O'Rahilly
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: O'Rahilly 
Answer:
 person: O'Rahilly