Complex sentence: Derry, Maine is a fictional town and a part of Stephen King's fictional Maine topography, and, like Castle Rock, it has served as the setting for a number of his novels, novellas, and short stories.
Split into simpler sentences: Derry, Maine is a fictional town and a part of Stephen King's fictional Maine topography. Derry has served as the setting for a number of his novels, novellas, and short stories.