28297
The prison population doubled over the same period , giving it one of highest incarceration rate in Western Europe at 147 per 100,000 .
 location: Western Europe
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: Western Europe 
Answer:
 location: Western Europe