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When his junior year ended in the spring of 1845 , Jackson was advanced to Cadet First Class but was not granted a Senior leadership position .
 person: Jackson
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: Jackson 
Answer:
 person: Jackson