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Middlesex County Sheriffs This is a list of current and former Sheriffs for Middlesex County , Massachusetts .
 location: Middlesex; location: Middlesex; location: 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, Massachusetts 
Answer:
 location: Middlesex; location: Middlesex; location: Massachusetts