5989
The reserves are estimated at , while exploration for gas and oil is underway in the Gambela Region bordering Sudan .
 location: Gambela Region; location: 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: Gambela Region, Sudan 
Answer:
 location: Gambela Region; location: Sudan