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Yesugen was one of the wives of Genghis Khan , the founder of the Mongol Empire .
 Yesugen, Genghis Khan, Mongol Empire
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yesugen, Genghis Khan, Mongol Empire