Write a clearer version for the sentence: Grigory Yevseyevich Zinoviev (born Hirsch Apfelbaum, – 25 August 1936), known also under the name Ovsei-Gershon Aronovich Radomyslsky, was a Russian revolutionary and Soviet politician.
Grigoriy Yevseyevich Zinov'yev (born Hirsch Apfelbaum, – 25 August 1936), known also under the name Ovsei-Gershon Aronovich Radomyslsky, was a Russian revolutionary and Soviet politician.