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Naejangsan is a mountain located on the border of North Jeolla and South Jeolla provinces in southwestern South Korea , approximately three hours drive south of Seoul .
 North Jeolla, South Jeolla, South Korea, Seoul
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 Jeolla, South Jeolla, South Korea, Seoul