Complex sentence: In 1913, the novel "Der Tunnel" was published by German author Bernhard Kellermann, which inspired four films of the same name: one in 1914 by William Wauer, and separate German, French, and English versions released in 1933 and 1935.
Split into simpler sentences: In 1913, the novel "Der Tunnel" was published by German author Bernhard Kellermann. It inspired four films of the same name: one in 1914 by William Wauer, and separate German, French, and British versions released in 1933 and 1935.