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He also participated in the evacuation of British troops from Dunkirk .
 organization: evacuation of British troops; location: Dunkirk
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: evacuation of British troops, Dunkirk 
Answer:
 organization: evacuation of British troops; location: Dunkirk