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The station was assigned to Aerospace Defense Command in 1957 , and was given designation " N-27B " .
 organization: Aerospace Defense Command
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: Aerospace Defense Command 
Answer:
 organization: Aerospace Defense Command