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However , most modern historians consent that several distinct and gradual changes of religious , dynastic , administrative and military nature , environmental problems and ecological imbalance coincided with shifts of power in Indochina and must all be taken into account to make an interpretation .
 location: Indochina
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: Indochina 
Answer:
 location: Indochina