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She married a cavalry officer , a member of the princely family of Kudachev ( a lineage of Tatar origin descended from Ghengis Khan ) who eventually held the rank equivalent to lieutenant-colonel ( voiskovoi starshina ) in the 6th Ural Cossack Regiment .
 Ghengis Khan, Ural Cossack
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ghengis Khan, Ural Cossack