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He had to put it on hold when he served in Tikrit in Iraq from January 2004 to March 2005 .
 location: Tikrit
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: Tikrit 
Answer:
 location: Tikrit