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Blair is the largest employer in Warren County , Pennsylvania , where it is based .
 person: Blair; location: Warren County , Pennsylvania
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: Blair, Warren County , Pennsylvania 
Answer:
 person: Blair; location: Warren County , Pennsylvania