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The protests were prompted by reports from several domestic and foreign election monitors as well as the widespread public perception that the results of the run-off vote of 21 November 2004 between leading candidates Viktor Yushchenko and Viktor Yanukovych were rigged by the authorities in favour of the latter .
 person: Viktor Yushchenko; person: Viktor Yanukovych
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Viktor Yushchenko; person: Viktor Yanukovych