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In January 1918 Major General William Otter recommended to the Government of Canada that a perfect situation existed in which to reorganize the active militia .
 person: Major General William Otter; organization: active militia
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: Major General William Otter, active militia 
Answer:
 person: Major General William Otter; organization: active militia