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Also , more than 100,000 Poles were massacred by the Ukrainian Insurgent Army in the Volhynia massacres , between 1943 and 1945 .
 Ukrainian Insurgent Army
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ukrainian Insurgent Army