Complex sentence: Despite initially being known for his willingness to co-operate with the Communist government of the time, he was eventually sentenced to 15 years imprisonment in 1951, and held until his release in March 1956 during the period of de-Stalinization.
Split into simpler sentences: Despite initially being known for his willingness to co-operate with the Communist government of the time, he was put on trial in 1951. The Times (London, England), 30 June 1951 Sentenced to 15 years imprisonment, his was released in March 1956 during the period of de-Stalinization.