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The Sogam-do , Daegam-do , Zung-do , Ae-do and Hyengzedo Islands Important Bird Area comprises a group of small islands , with a collective area of 18 ha , in the north-eastern Yellow Sea , lying close to the western coast of North Korea .
 North Korea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 North Korea