Question: Who is the author of young adult tetralogy of high fantasy novels that contain the fictional race, the Urgal?
Sentence (from "Inheritance Cycle"): The series was originally intended to be a trilogy (named the "Inheritance Trilogy") until Paolini announced on October 30, 2007, while working on the third novel, that he believed the story was too complex to conclude in just three books.
Relevant evidence: No