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By comparison , the Auschwitz concentration camp liberated a half a year later , on January 27 , 1945 was first declared a national monument in April 1946 , but handed over to Poland by the Red Army only in 1947 .
 organization: Red Army
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Red Army 
Answer:
 organization: Red Army