Complex sentence: Later that year, Warner Bros. produced a biopic of Alvin C. York, a decorated American World War I soldie, "Sergeant York" (also 1941), starring Gary Cooper.
Split into simpler sentences: Later that year, Warner Bros. distributed a biopic of Alvin C. York, a decorated American World War I soldier. The movie was called "Sergeant York" (also 1941), starring Gary Cooper.