Complex sentence: The novel, which quickly became a cult classic, was made into a movie by Danny Boyle with Leonardo DiCaprio in the lead role of Richard, however the movie did not stay completely true to the book.
Split into simpler sentences: The novel, which quickly became a cult classic, was made into a movie by Danny Boyle with Leonardo DiCaprio in the lead role of Richard. However, the movie did not stay completely true to the book.