Question: Are both Graham Swift and Terry Pratchett English literary figures?
Context: Terry Pratchett's Going Postal is a two-part television film adaptation of "Going Postal" by Terry Pratchett, adapted by Richard Kurti and Bev Doyle and produced by The Mob, which was first broadcast on Sky1, and in high definition on Sky1 HD, at the end of May 2010. Terry Pratchett: Choosing to Die is a 2011 one-off television documentary produced by KEO North for BBC Scotland on the subject of assisted suicide, directed and produced by Charlie Russell.  It is presented by Terry Pratchett and features Peter Smedley, a 71-year-old motor neurone disease sufferer, dying by suicide at the Swiss assisted dying organisation, Dignitas. The Unseen University Challenge is a book of trivia questions related to Terry Pratchett's "Discworld" novels.  It was written by David Langford (with Terry Pratchett's permission) and was published in 1996.  Its name is a reference to the television quiz "University Challenge".  Unseen University is the Wizard's university in Ankh-Morpork. Graham Colin Swift FRSL (born 4 May 1949) is an English writer.  Born in London, England, he was educated at Dulwich College, London, Queens' College, Cambridge, and later the University of York. Sir Terence David John Pratchett, OBE (28 April 1948 – 12 March 2015), better known as Terry Pratchett, was an English author of fantasy novels, especially comical works.  He is best known for his Discworld series of 41 novels.  Pratchett's first novel, "The Carpet People", was published in 1971.  The first Discworld novel, "The Colour of Magic", was published in 1983, after which he wrote two books a year on average.  His 2011 Discworld novel "Snuff" was at the time of its release the third-fastest-selling hardback adult-readership novel since records began in the UK, selling 55,000 copies in the first three days.  His final Discworld novel, "The Shepherd's Crown", was published in August 2015, five months after his death. Terry Pratchett's The Colour of Magic is a two-part television adaptation of the bestselling novels "The Colour of Magic" and "The Light Fantastic" by Terry Pratchett.  The fantasy film was produced for Sky1 by The Mob, a small British studio, starring David Jason, Sean Astin, Tim Curry and Christopher Lee as the voice of Death.  Vadim Jean both adapted the screenplay from Pratchett's original novels, and served as director. The Unseen University Cut-Out Book is a cut-out book that allows a reader to construct a replica of Unseen University from Terry Pratchett's Discworld Series.  It was published on 1 October 2006, and includes a foreword by Terry Pratchett. The Terry Pratchett First Novel Award is a biennial award for the best unpublished science fiction novel in the Commonwealth of Nations.  It is named after British author Terry Pratchett.  The book is chosen by a panel of judges previously including Pratchett. Sky 1 has commissioned many homegrown programmes since it first started broadcasting back in 1984 but it was not until 1989 that content went beyond music and children's reprogramming.  During the early years new game shows included a few series of "Blockbusters" and "Spellbound", along with "The Price is Right" and "Sale of the Century".  Original dramas include "Dream Team", a series based on a fictional football team; "The Strangerers", a science fiction sitcom that was dropped after one series and never repeated; Al Murray's sitcom "Time Gentlemen Please"; and "Baddiel's Syndrome". " Hex", another sci-fi show, proved popular but was cancelled in April 2006, and "Mile High" also proved quite popular but only lasted from 2003–2005.  Sky One commissioned "Terry Pratchett's Hogfather" for Christmas 2006, which proved to be their most successful programme ever.  Following that success, Sky brought out in 2008 an adaptation of "The Colour of Magic" and its second half "The Light Fantastic", and in 2010 "Terry Pratchett's Going Postal", the 33rd book in the "Discworld" series.  Sky also co-produces "The 4400" and co-financed the first season of "Battlestar Galactica". Terry Pratchett's Hogfather is a two-part television film adaptation of "Hogfather" by Terry Pratchett, produced by The Mob, and first broadcast on Sky One, and in High Definition on Sky1 HD, over Christmas 2006.  First aired in two 1.5-hour episodes on 17 and 18 December 2006 at 20:00 UTC, it was the first live-action film adaptation of a "Discworld" novel.  In 2007, the two episodes were rerun on Christmas Eve and Christmas Day respectively on Sky One and Sky1 HD.
Answer: yes