Question: Sophie Turner made her debut as the character from the A Song of Ice and Fire series created byt whom?

Context paragraphs:
Sophie Turner: Sophie Turner (born 21 February 1996) is an English actress.  Turner made her professional acting debut as Sansa Stark on the HBO fantasy television series "Game of Thrones" (2011–present), which brought her international recognition.

Daisy Turner (actress): Daisy Turner (born 28 June 1990) is an English model and actress.  Turner made her debut on Hollyoaks in the recurring role of Jenny Houston on 15 April 2011.  She is the younger sister of "EastEnders" actress Lacey Turner.

Sansa Stark: Sansa Stark is a fictional character created by American author George R. R. Martin.  She is a prominent character in Martin's award-winning "A Song of Ice and Fire" series.

Sophie Turner (model): Sophie Turner (born 30 April 1984) is an Australian model, reality television personality and lawyer who first came to prominence as a contestant on the Australian television series "Search for a Supermodel".

Rebels, Rogues &amp; Sworn Brothers: Rebels, Rogues & Sworn Brothers is an album by punk/alt-country band Lucero.  It was released in 2006.  The album features less country influence than any previous release.  It was the band's last album for an independent label before signing with Universal Music Group in 2008.  The name of the album comes from the appendix of Storm of Swords, the third book in George R.R. Martin's Song of Ice and Fire series.

Trea Turner: Trea Vance Turner (born June 30, 1993) is an American professional baseball shortstop for the Washington Nationals of Major League Baseball (MLB).  He played college baseball at North Carolina State University (NC State).  The San Diego Padres selected Turner in the first round of the 2014 MLB Draft, and traded him to the Nationals in 2015.  Turner made his MLB debut with the Nationals on August 21, 2015.

X-Men: Apocalypse: X-Men: Apocalypse is a 2016 American superhero film based on the fictional X-Men characters that appear in Marvel Comics.  It is the ninth installment in the "X-Men" film series and a sequel to "".  Directed by Bryan Singer, with a screenplay by Simon Kinberg from a story conceived by Singer, Kinberg, Michael Dougherty and Dan Harris, the film stars James McAvoy, Michael Fassbender, Jennifer Lawrence, Oscar Isaac, Nicholas Hoult, Rose Byrne, Tye Sheridan, Sophie Turner, Olivia Munn and Lucas Till.  The ancient mutant En Sabah Nur awakens in 1983 and plans to wipe out modern civilization and take over the world, leading the X-Men to try to stop him and defeat his team of renegade mutants.

They Won't Forget: They Won't Forget is a 1937 film directed by Mervyn LeRoy.  It was based on a novel by Ward Greene called "Death in the Deep South", which was in turn a fictionalized account of a real life case: the trial and subsequent lynching of Leo Frank after the murder of Mary Phagan in 1913.  Lana Turner made her film debut as the murder victim.

X-Men: Dark Phoenix: X-Men: Dark Phoenix is an upcoming American superhero film based on Marvel Comics' X-Men characters, distributed by 20th Century Fox.  It is intended to be the thirteenth installment in the "X-Men" film series, and the beginning of a new "X-Men" trilogy.  The film is being written and directed by Simon Kinberg, and is set to star James McAvoy, Michael Fassbender, Jennifer Lawrence, Nicholas Hoult, Tye Sheridan, Sophie Turner, Alexandra Shipp, Kodi Smit-McPhee, Evan Peters, and Jessica Chastain.  In "X-Men: Dark Phoenix", the X-Men must face the full power of the Dark Phoenix as well as the alien Shi'ar empire.

Sophie Ramsay: Sophie Ramsay is a fictional character from the Australian soap opera "Neighbours", played by Kaiya Jones.  The actress was cast in the role following a competitive audition process.  Jones began filming her first scenes in February 2009.  She made her first screen appearance during the episode broadcast on 18 May 2009.  The character was created as part of a new generation of the Ramsay family, along with her brother Harry (Will Moore) and sister Kate (Ashleigh Brewer).  Sophie is the youngest of three siblings introduced to the show.  Sophie departed on 29 March 2013, after Jones decided to leave to concentrate on her schooling.  The actress briefly reprised the role for two episodes from 7 April 2014.

Supporting paragraphs: Sophie Turner Sansa Stark
Answer: George R. R. Martin