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The men 's 400 metres competition at the 2002 Asian Games in Busan , South Korea was held on 7 – 9 October at the Busan Asiad Main Stadium .
 Busan, South Korea, Busan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Busan, South Korea, Busan