Complex sentence: Nils T. Granlund (September 29,1890--April 21,1957) was a Swedish American Broadway show producer, radio industry pioneer, a publicist for Marcus Loew who formed Loews Theatres and Metro-Goldwyn-Mayer (MGM).
Split into simpler sentences: Nils T. Granlund (September 29,1890--April 21,1957) was an American show producer, entertainment industry entrepreneur and radio industry pioneer. He was a publicist for Marcus Loew who formed Loews Theatres and Metro-Goldwyn-Mayer (MGM).