Complex sentence: He appeared in the George Formby comedy, "Turned Out Nice Again" (1941), and after a memorable supporting role in "The Third Man", he became a fixture in British films of the 1950s.
Split into simpler sentences: He appeared in the George Formby comedy, "Turned Out Nice Again" (1941). Following a memorable supporting role in "The Third Man", he became a fixture in British films of the 1950s.