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The Polish side suffered at least 100 killed in action , military and civil , but losses still remain uncertain in detail ( Soviet sources claim 644 killed and 1543 captives with many guns and machine guns etc .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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