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He has participated in major events like the 2007 World Championships in Athletics in Osaka , Japan , and achieved a 4th place finish at the 2008 IAAF World Indoor Championships in Valencia , Spain .
 Osaka, Japan, Valencia , Spain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Osaka, Japan, Valencia , Spain