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He was promoted to lieutenant on 21 April 1905 and then spent the next two years in Tibet and Sikkim before moving to Benares in 1907 where he caught diphtheria .
 location: Tibet; location: Sikkim; location: Benares
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: Tibet, Sikkim, Benares 
Answer:
 location: Tibet; location: Sikkim; location: Benares