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After Russia 's victory , a separate newly created Danube Cossack Host was deemed sufficient to safeguard the borders and the ex-Zaporozhian presence in the Danube was deemed excessive .
 Russia, Danube Cossack Host, Danube
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Russia, Danube Cossack Host, Danube