Complex sentence: The facility served as a backdrop for the 1950 film "Union Station", which starred William Holden and Nancy Olson and has used in many vintage motion pictures, many of the film noir variety.
Split into simpler sentences: The facility served as a backdrop for the 1950 film "Union Station", which starred William Holden and Nancy Olson. It has used in many vintage motion pictures, many of the film noir variety.