Question: Hafþór Júlíus Björnsson plays an HBO character who first appears in book form in what year?
Context: Europe's Strongest Man is an annual strength athletics competition which began in 1980.  The event is held in various locations throughout Europe, and features exclusively European strongman competitors.  Mariusz Pudzianowski currently holds the record for most wins with 6 titles.  Zydrunas Savickas, Geoff Capes, Riku Kiri and Hafþór Júlíus Björnsson each hold 3 titles.  As of 2010, the Europe's Strongest Man contest has become a part of the Giants Live season of annual grand prix events.  The contest serves as a qualifying event for the World's Strongest Man contest, with the top 3 placings qualifying for that year's WSM contest. Hafþór Júlíus "Thor" Björnsson (] ; also Hafthor Julius Bjornsson, born November 26, 1988) is an Icelandic professional strongman, actor, and former professional basketball player.  He plays Ser Gregor "The Mountain" Clegane in the HBO series "Game of Thrones". The 2012 World's Strongest Man was the 35th edition of World's Strongest Man.  The event was held on the grounds of the Commerce Casino in Los Angeles, California, US.  The event was sponsored by MET-Rx.  The qualifying heats were held from September 24–27, and the finals took place Sept. 30 & Oct. 1, 2012.  The winner was Žydrūnas Savickas, it was his third WSM title.  Vytautas Lalas of Lithuania was second, and Iceland's Hafþór Júlíus Björnsson was third. The 2014 World's Strongest Man was the 37th edition of World's Strongest Man.  The event was held at the Commerce Casino in Los Angeles, California, the same host city as the 2012 World's Strongest Man contest.  The qualifying heats were held from March 22–25 and the finals on March 28 & 29.  Unlike previous years when 10 athletes qualified for the finals, this year there were 12 qualifying spots.  The top 2 from each heat qualified, as well as the 2 highest scoring 3rd place athletes from all 5 heats.  The event was sponsored by the Commerce Casino and will begin broadcasting in the United States on the CBS Sports Network from July 4-August 13, 2014.  Zydrunas Savickas from Lithuania finished in first place, this was his fourth WSM title.  Hafþór Júlíus Björnsson from Iceland finished in second place, and Brian Shaw from the United States came in third. Kickboxer: Retaliation is an upcoming American martial arts film directed and written by Dimitri Logothetis.  Logothetis was attracted to the original Jean Claude Van Damme’s Kickboxer because of his martial arts background and that’s what inspired him to pursue the rights to the original, develop a reboot of the franchise and ultimately write, produce and direct a contemporary version of the pop culture, iconic Kickboxer.  It was important that Logothetis to convince Van Damme to step into the role of mentor to ordain a new, high octane Kickboxer who has a sixth degree black belt in BJJ, Alain Moussi.  Because Kickboxer: Vengeance was such a successful independent feature in the world market, it generated a sequel.  It is a sequel to the 2016 film "".  The film stars Alain Moussi, Jean-Claude Van Damme, Christopher Lambert, Ronaldinho, Mike Tyson and Hafþór Júlíus Björnsson.  Aside from Moussi and Van Damme, Sara Malakul Lane and Sam Medina are reprising their roles from the previous film. Gregor Clegane, nicknamed "The Mountain That Rides" or simply "The Mountain", is a fictional character in the "A Song of Ice and Fire" series of fantasy novels by American author George R. R. Martin, and its television adaptation "Game of Thrones".  In the books, the character is initially introduced in 1996's "A Game of Thrones".  He subsequently appeared in "A Clash of Kings" (1998), "A Storm of Swords" (2000) and in "A Dance with Dragons" (2011). The 2013 World's Strongest Man was the 36th edition of World's Strongest Man.  The event was held in Haitang Bay, Sanya, China, the same host city as the 2006 World's Strongest Man contest.  The qualifying heats were held from August 17–20 and the finals on Aug. 23 & 24.  The event was sponsored by the Commerce Casino and will be broadcast in the United States on the CBS Sports Network.  Brian Shaw from the United States placed first, winning his second WSM title after winning in 2011.  Zydrunas Savickas from Lithuania was second after finishing 1st the year before, and Hafþór Júlíus Björnsson from Iceland was third for the second year in a row. The following is a list of characters who appear in the eighth series of the BBC school drama "Waterloo Road", in order of appearance.  The Eighth Series consists of Thirty Episodes, first broadcast from 23 August 2012 to 4 July 2013.  New Main Cast Members from Episode One include Head of English (later Head Teacher) Christine Mulgrew and History Teacher Audrey McFall, with Maggie Croft (later Budgen) and Lorraine Donnegan also promoted to the Main Cast.  New Pupil Characters from Episode One include Christine's son Connor Mulgrew, Imogen Stewart, Jade Fleming, Lula Tsibi, Rhiannon Salt and Angus Hancock.  Head of rival school Havelock High Gerald Findlay also appears in the first five episodes.  Episode four sees the first of several appearances of Imogen's mother Sally Stewart; Michael Byrne's father Billy debuts in the same episode, and appears until his death in Episode Ten.  Pupil Liberty Gordon first appears in Episode Five, and Kevin Skelton (later Chalk) also joins the supporting cast in Episode Eight.  Lorraine's sister Sonya Donnegan joins the main cast as School Secretary from Episode Nine.  Episode Eleven sees the Barry family, consisting of mother Carol and her children Barry, Dynasty and Kacey all join the supporting cast, with pupil Jack MacAllister also debuting in the same episode.  Towards the end of the series, supporting characters of Maintenance Assistant Ndale Kayuni, Dynasty's former boyfriend Steve-O Malone and Acting Head of Science Esther Fairclough all appear.  Angus Deayton and Richard Mylan join the cast as Head of Modern Languages George Windsor and Deputy Head Simon Lowsley in episodes Twenty-Seven and Twenty-Nine respectively.  Recurring Character Robert Bain, Head of Greenock Education makes his first appearance in episode Twenty-Seven, and wife of George Windsor, Princess first appears in episode Twenty-Nine. Eddie: Strongman is a 2015 British documentary film directed by Matt Bell.  It follows the life of English strongman Eddie Hall as he strives to become the World's Strongest Man, which he later achieved in 2017.  The film provides a unique insight into the extreme lifestyle of an international strongman and the sacrifices he must make to achieve his goals.  It features appearances from Arnold Schwarzenegger, Brian Shaw, Žydrūnas Savickas, Hafþór Júlíus Björnsson, Benedikt Magnússon, Terry Hollands, and Geoff Capes. On the Movements and Habits of Climbing Plants is a book by Charles Darwin first printed in book form in 1875 by John Murray.  Originally, the text appeared as essay in the 9th volume of the "Journal of the Linnean Society", therefore the first edition in book form is actually called the ‘second edition, revised.’  Illustrations were drawn by Charles Darwin’s son, George Darwin.
Answer: 1996