Question: Who is the author of young adult tetralogy of high fantasy novels that contain the fictional race, the Urgal?

Context paragraphs:
Andre Norton Award: The Andre Norton Award for Young Adult Science Fiction and Fantasy is an annual award presented by the Science Fiction and Fantasy Writers of America (SFWA) to the author of the best young adult or middle grade science fiction or fantasy book published in the United States in the preceding year.  It is named to honor prolific science fiction and fantasy author Andre Norton (1912–2005), and it was established by then SFWA president Catherine Asaro and the SFWA Young Adult Fiction committee and announced on February 20, 2005.  Any published young adult or middle grade science fiction or fantasy novel is eligible for the prize, including graphic novels.  There is no limit on word count.  The award is presented along with the Nebula Awards and follows the same rules for nominations and voting; as the awards are separate, works may be simultaneously nominated for both the Andre Norton award and a Nebula Award.

Inheritance Cycle: The Inheritance Cycle is a young adult tetralogy of high fantasy novels written by American author Christopher Paolini.  Set in the fictional world of Alagaësia ( ), the novels focus on the adventures of a teenage boy named Eragon and his dragon, Saphira, as they struggle to overthrow the evil king Galbatorix.  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.

Urgal (disambiguation): The Urgals are a fictional race in Christopher Paolini's Inheritance Cycle.  Urgal may also refer to:

Lisa Mantchev: Lisa Mantchev is an American author of fantasy novels and short stories.  She is best known for her Théâtre Illuminata series, a trilogy of young adult fantasy novels.

The Chronicles of Thomas Covenant: The Chronicles of Thomas Covenant is a series of ten high fantasy novels written by American author Stephen R. Donaldson.  The series began as a trilogy, entitled "The Chronicles of Thomas Covenant, the Unbeliever".  This was followed by another trilogy, "The Second Chronicles of Thomas Covenant", and finally a tetralogy, "The Last Chronicles of Thomas Covenant".

Suzanne Weyn: Suzanne Weyn (born July 7, 1955, Long Island, New York) is an American author.  She primarily writes children's and young adult science fiction and fantasy novels. and has written over fifty novels and short stories.  She is best known for "The Bar Code Tattoo", "The Bar Code Rebellion" and "The Bar Code Prophecy".  "The Bar Code Tattoo" has been translated into German, and in 2007 was nominated for the Jugendliteraturpreis for youth literature given by the German government.  It was a 2007 Nevada Library nominee for Young Adult literature and American Library Association 2005 Quick Pick for Reluctant Young Adult Readers.

Jeff Sampson: Jeff Sampson is a young adult and children's author.  He was born on a U.S. military base in Nuremberg, Germany on July 15, 1982.  He started writing professionally at age eighteen.  His first books were packaged series fiction.  When Sampson was twenty-two, he had his first novel published as part of the Dragonlance series of fantasy novels.  He since went on to write many original young adult and children's series, including Monster Slayers under the pen name Lukas Ritter for Wizards of the Coast; Deviants for Balzer + Bray, an imprint of HarperCollins Children’s Books; and The Last Dogs under the pen name Christopher Holt for Little, Brown Books for Young Readers.  Jeff Sampson currently lives in Seattle, Washington in the United States.

Caroline Stevermer: Caroline Stevermer (born 1955) is a writer of young adult fantasy novels and shorter works.  She is best known for historical fantasy novels.

Lloyd Alexander: Lloyd Chudley Alexander (January 30, 1924 – May 17, 2007) was an American author of more than forty books, primarily fantasy novels for children and young adults.  His most famous work is "The Chronicles of Prydain", a series of five high fantasy novels whose conclusion, "The High King", was awarded the 1969 Newbery Medal for excellence in American children's literature.  He won U.S. National Book Awards in 1971 and 1982.

Young adult fiction: Young adult fiction or young adult literature (YA) is fiction published for readers in their youth.  The age range for young adult fiction is subjective.  Some sources claim it ranges from ages 12–18, while authors and readers of "young teen novels" often define it as written for those aged 15 to the early 20s.  The terms young adult novel, juvenile novel, teenage fiction, young adult book, etc., refer to the works in this category.

Supporting paragraphs: Urgal (disambiguation) Inheritance Cycle
Answer: Christopher Paolini