Original sentence: Robinson own considerable contemporary art collection was used to decorate the set.Robinson was the subject of investigation by the House Un-American Activities Committee and reportedly why the film was of a lower budget and caliber than his previous films.The works included impressionist works by Gauguin, Degas, Duran, and Gladys Lloyd
Edited sentence: Because Robinson was also the target of investigation by the House Un-American Activities Committee this movie was of a lower budget and caliber than his earlier films.During filming Robinson lent his considerable contemporary art collection to the production company.These include some impressionist works by Gauguin, Degas, Duran, and Gladys Lloyd, all of which appear in the film