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Tamil Tiger rebels overran an isolated police post in Sri Lanka 's northeast early on Thursday killing 24 policemen , defence officials said .
 organization: Tamil Tiger; location: Sri Lanka
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Tamil Tiger, Sri Lanka 
Answer:
 organization: Tamil Tiger; location: Sri Lanka