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Between 1874 and 1921 , the total population of Cambodia increased from about 946,000 to 2.4 million .
 location: Cambodia
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: Cambodia 
Answer:
 location: Cambodia