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The Middlesex County Sheriff 's Office is a law enforcement agency which serves the 54 cities and towns of Middlesex County , Massachusetts , United States .
 location: Middlesex; location: Middlesex County , Massachusetts
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: Middlesex, Middlesex County , Massachusetts 
Answer:
 location: Middlesex; location: Middlesex County , Massachusetts