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These states agreed to form a new federal government , the Confederate States of America , on February 4 , 1861 .
 location: Confederate States of America
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: Confederate States of America 
Answer:
 location: Confederate States of America