Complex sentence: Camouflaging cloaks form a central plot element in Samuel R. Delany's 1975 novel Dhalgren and the "Harry Potter" series of novels by J.K. Rowling.
Split into simpler sentences: Camouflaging cloaks form a central plot element in Samuel R. Delany's 1975 novel Dhalgren. A Cloak of Invisibility is presented as a key plot element in the "Harry Potter" series of novels by J.K. Rowling.