Assertion: concentration camp | /r/HasProperty | investigated by the ussr
Facets:
Source sentences:
text: The reason why the exact number of people who died in the Concentration Camps is because, after World War 2, Poland was took over by the USSR due to Germany occupied Poland in 1939 and many concentration camps such as Auschwitz, Treblinka, Sobibor, Krakow and Warsaw were investigated by the USSR.