Complex sentence: I.A.L. Diamond (June 27,1920--April 21,1988) was a comedy and drama writer in Hollywood from the 1940s through the 1980s, he wrote eleven screenplays with Billy Wilder for Wilder's films.
Split into simpler sentences: I.A.L. Diamond (June 27,1920--April 21,1988) was a comedy and drama writer in Hollywood from the 1940s through the 1980s. He wrote eleven screenplays with Billy Wilder for Wilder's films.