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During the Civil War served in the Union Army as a volunteer aide-de-camp to General George B. McClellan .
 event: Civil War; organization: Union Army; person: George B. McClellan
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Civil War, Union Army, George B. McClellan 
Answer:
 event: Civil War; organization: Union Army; person: George B. McClellan