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South Sudan was eventually approved for membership to the bloc in March 2016 , and signed a treaty of accession in April 2016 .
 location: South Sudan
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: South Sudan 
Answer:
 location: South Sudan