187620
The Ryonghung Gang estuary Important Bird Area comprises the 10,000 ha estuary of the Ryonghung River where it flows into the Sea of Japan in South Hamgyong Province on the eastern coast of North Korea .
 location: South Hamgyong Province; location: North Korea
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 Hamgyong Province, North Korea 
Answer:
 location: South Hamgyong Province; location: North Korea