Complex sentence: Lovecraft has a villainous wizard in his short story "The Thing on the Doorstep" called Ephraim Waite; according to Robert M. Price this character was based on Waite.
Split into simpler sentences: Lovecraft has a villainous wizard in his short story The Thing on the Doorstep called Ephraim Waite. According to Robert M. Price this character was based on Waite.