Read this and answer the question. If the question is unanswerable, say "unanswerable".

On February 8, 1955, Malenkov was officially demoted to deputy Prime Minister. As First Secretary of the Central Committee of the Communist Party, Nikita Khrushchev's authority was significantly enhanced by Malenkov's demotion.

Who was demoted on February 8, 1945?
unanswerable