Complex sentence: An advertisement about purchasing posters from the film, in a variety of sizes, appeared in 1914 in the trade journal "The Moving Picture World", which stated that the film is "a stupendous production that will create a sensation whenever shown".
Split into simpler sentences: An advertisement about purchasing posters from the film, in a variety of sizes, appeared in the 1914 publication of the trade journal "The Moving Picture World". This advertisement also stated that the film is "a stupendous production that will create a sensation whenever shown".