34912
It is one of two de jure county seats of Middlesex County , although the county 's government was abolished in 1997 .
 location: Middlesex County
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 County 
Answer:
 location: Middlesex County