Question: Who wrote the novel which Katherine Langford played a role in the movie that based on the book?
Context: Katherine Langford (born 29 April 1996) is an Australian actress.  She is known for playing Hannah Baker in the 2017 Netflix series "13 Reasons Why", based on the novel of the same name. Major General West, is a fictional character in the Stargate SG-1 universe, played by Leon Rippy.  West headed the USAF's Project Giza (also known as the Stargate Project), the forerunner of the SGC.  He oversaw Dr. Catherine Langford's experiments with the Stargate until selecting, recalling, and delegating Colonel Jack O'Neil as military commander when Dr. Daniel Jackson joined the team.  Upon the successful connection of the Earth Stargate to Abydos, West immediately militarized the program and locked out most of the civilian team previously under Dr. Langford.  He then authorized the initial excursion to Abydos (in the original movie). The Mystery of the Clockwork Sparrow is the debut novel of British children's author Katherine Woodfine, initially published by Egmont Publishing in June 2015.  The novel is the first book in The Sinclair's Mysteries, a quartet of mystery-adventure novels set in Edwardian England.The Mystery of the Clockwork Sparrow was Waterstones Children's Book of the Month in June 2015.  The novel was inspired by Katherine's love of classic children's adventure stories, E. Nesbit, Frances Hodgson Burnett, Enid Blyton and Nancy Drew. Hannah Baker is a fictional character created by American author Jay Asher.  She is the subject of his 2007 mystery novel "Thirteen Reasons Why", and Netflix's adaptation of the book, "13 Reasons Why".  Hannah is introduced as a sophomore at the fictional Liberty High School, characterized by her struggle adjusting to life in an unsympathetic school environment.  She is played by Katherine Langford on the television series.  Langford is signed on to appear in the show's second season, which is set to air in 2018. The Bamboo Blonde is a 1946 American war film directed by Anthony Mann based on an original story "Chicago Lulu" by Wayne Whittaker.  Saddled with a low budget, it stars singer Frances Langford in the title role, Ralph Edwards (from TV's "This Is Your Life") and bit player Russell Wade.  As an RKO star, Langford was famous for her role in entertaining the troops in World War II, and the film featured a number of songs that her character sings at a nightclub. The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872.  It was led by geologist Ferdinand Vandeveer Hayden.  The 1871 survey was not Hayden's first, but it was the first federally funded, geological survey to explore and further document features in the region soon to become Yellowstone National Park and played a prominent role in convincing the U.S. Congress to pass the legislation creating the park.  In 1894, Nathaniel P. Langford, the first park superintendent and a member of the Washburn-Langford-Doane Expedition which explored the park in 1870, wrote this about the Hayden expedition: Skull Orchard is the debut solo album by Jon Langford, recorded in August 1997 and released on January 20, 1998 by Sugar Free Records, a Chicago-based label.  "Skull Orchard", described on its release in 1998 as Langford's most Welsh release ever, had two homonymically-linked themes: Wales and whales which came together in the "Youghal" track, about the filming of the 1956 movie "Moby Dick" in coastal Wales.  In 2011 the album was re-recorded and re-issued by Langford backed by the Burlington Welsh Male Chorus, based in Toronto. Simon vs. the Homo Sapiens Agenda is an American comedy-drama film scheduled for release in Spring 2018, directed by Greg Berlanti and based on the novel of the same name by Becky Albertalli.  The film stars Nick Robinson, Katherine Langford and Miles Heizer.  Robinson stars as Simon, a 17-year-old high school student at Creekwood High School who comes out as gay in uncertain circumstances, having consequences for everyone around him. Superstar is a 1999 American comedy film and a "Saturday Night Live" spin-off about a quirky, socially inept girl named Mary Katherine Gallagher.  The character was created by "SNL" star Molly Shannon and appeared as a recurring character on "SNL" in numerous skits.  The story follows Mary Katherine trying to find her place in her Roman Catholic private school.  The movie is directed by former "The Kids in the Hall" member Bruce McCulloch.  It stars Molly Shannon, Will Ferrell, Harland Williams, and Elaine Hendrix.  "SNL" and "The Kids in the Hall" alum Mark McKinney, who appeared in many of the Mary Katherine Gallagher "SNL" skits on TV, also has a minor role as a priest.  Molly Shannon received a nomination for Blockbuster Entertainment Award "Favorite Actress - Comedy" but lost out to Heather Graham in "". Thirteen Reasons Why is a young adult novel written in 2007 by Jay Asher.  It is the story of a young high school student as she descends into despair brought on by betrayal and bullying, culminating with her suicide.  She details the thirteen reasons why in an audio diary which was mailed to a friend two weeks after her death.
Answer: Jay Asher