29717
Sudan and Eritrea agreed to abolish entry visa requirements , opening their common borders for free movement of both nationals .
 location: Sudan; location: Eritrea
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: Sudan, Eritrea 
Answer:
 location: Sudan; location: Eritrea