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Olha Zavhorodnya ( born 6 January 1983 ) is a Ukrainian athlete who specializes in the 400 metres and 800 metres .
 Olha Zavhorodnya, Ukrainian
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Olha Zavhorodnya, Ukrainian