36938
He declared that he would " go with his army to the Ukraine in order to liberate the Orthodox people from the yoke of oppression and torment of the Polish tyranny and claim vengeance for grievances , ruin and torturous abuse ... suffered by the entire Russian populace , living on both sides of the Dnieper . "
 Polish
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Polish