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President Andrew Johnson nominated Colonel Roberts for the award of the grade of brevet brigadier general , United States Volunteers , on February 24 , 1866 and the brevet was confirmed by the U. S. Senate on April 10 , 1866 , to rank from March 13 , 1865 .
 person: Andrew Johnson; person: Roberts
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: Andrew Johnson, Roberts 
Answer:
 person: Andrew Johnson; person: Roberts