Original sentence: The memorial was erected by the city of Tallinn and unveiled on September 22, 1947, on the third anniversary of Red Army entering Tallinn in [[1944], an event which Soviet Union viewed as taking Tallinn back from Nazi Germany
Edited sentence: The memorial was erected by the city of Tallinn and unveiled on September 22, 1947, on the third anniversary of Red Army re-taking Tallinn from Nazi Germany in 1944