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As no candidate received a majority of the vote , a run-off was held between Prime Minister Yulia Tymoshenko and opposition leader Viktor Yanukovych followed on 7 February .
 Yulia Tymoshenko, Viktor Yanukovych
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Yulia Tymoshenko, Viktor Yanukovych