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Roman Leybyuk ( born 16 January 1977 in Yaremche ) is a Ukrainian cross-country skier who has competed since 1998 .
 Leybyuk, Yaremche, 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:
 Leybyuk, Yaremche, Ukrainian