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It is set in the modern day United States and United Kingdom , in the same universe as Riordan 's Percy Jackson and the Olympians and The Heroes of Olympus .
 location: United States; location: United Kingdom; person: Riordan
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: United States, United Kingdom, Riordan 
Answer:
 location: United States; location: United Kingdom; person: Riordan