Original sentence: Winston Churchill: The Wilderness Years is an 8-part 1981 drama serial based on the life of Winston Churchill, and particularly his years in enforced exile from political position during the 1920s and 30s
Edited sentence: Winston Churchill: The Wilderness Years was an 8-part 1981 drama serial based on the life of Winston Churchill, and particularly his years in enforced exile from political position during the 1920s and 30s