Question: What year did the writer of the 1968 novel "The Iron Man" become Poet Laurete?

full_context: Document 1: 9 (2009 animated film): 9 is a 2009 American computer-animated science fiction film directed by Shane Acker, written by Pamela Pettler, and produced by Jim Lemley, Dana Ginsburg, Tim Burton, and Timur Bekmambetov. The film stars the voice talents of Elijah Wood, John C. Reilly, Jennifer Connelly, Christopher Plummer, Crispin Glover, Martin Landau, and Fred Tatasciore.
Document 2: Theodore Roethke: Theodore Huebner Roethke ( ; May 25, 1908 – August 1, 1963) was an American poet. Roethke is regarded as one of the most accomplished and influential poets of his generation.
Document 3: Ted Hughes: Edward James Hughes, {'1': ", '2': ", '3': ", '4': "} (17 August 1930 – 28 October 1998) was an English poet and children's writer. Critics frequently rank him as one of the best poets of his generation, and one of the twentieth century's greatest writers. He served as Poet Laureate from 1984 until his death. In 2008 "The Times" ranked Hughes fourth on their list of "The 50 greatest British writers since 1945".
Document 4: Titan A.E.: Titan A.E. is a 2000 American animated science fiction film directed by Don Bluth and Gary Goldman. Its title refers to the spacecraft central to the plot, with "A.E." meaning "After Earth". It stars Matt Damon, Bill Pullman, John Leguizamo, Nathan Lane, Janeane Garofalo and Drew Barrymore. The film's animation technique combines traditional hand-drawn animation and extensive use of computer generated imagery. Its working title was "Planet Ice". It was theatrically released on June 16, 2000, by 20th Century Fox and was the final film for Fox Animation Studios. The film grossed $36.8 million on a $75–$90 million budget, making a $100-million loss for the studio.
Document 5: Astro Boy (film): Astro Boy is a 2009 Hong Kong-American computer-animated action-comedy superhero film loosely based on the manga series of the same name by the Japanese writer and illustrator Osamu Tezuka. It was produced by Imagi Animation Studios, and directed by David Bowers, who co-wrote the screenplay with Timothy Harris. Freddie Highmore provides the voice of Astro Boy in the film alongside the voices of Kristen Bell, Nathan Lane, Eugene Levy, Matt Lucas, Bill Nighy, Donald Sutherland, Charlize Theron and Nicolas Cage.
Document 6: The Blue Flannel Suit: "The Blue Flannel Suit" is a poem by Ted Hughes published in 1998 in his book "Birthday Letters". The 30th of 88 poems in the collection, "The Blue Flannel Suit" is one of several in the series explicitly about his wife Sylvia Plath. Prior to the series, Hughes had rarely discussed their relationship or Plath's death or responded to claims by some critics that he bore some responsibility for her state of mind and death.
Document 7: The Iron Man (novel): The Iron Man: A Children's Story in Five Nights is a 1968 science fiction novel by British Poet Laureate Ted Hughes, first published by Faber and Faber in the UK with illustrations by George Adamson. Described by some as a modern fairy tale, it describes the unexpected arrival in England of a giant "metal man" of unknown origin who rains destruction on the countryside by attacking industrial farm equipment, before befriending a small boy and defending the world from a monster from outer space. Expanding the narrative beyond a criticism of warfare and inter-human conflict, Hughes later wrote a sequel, "The Iron Woman" (1993), describing retribution based on environmental themes related to pollution.
Document 8: A. E. Housman: Alfred Edward Housman ( ; 26 March 1859 – 30 April 1936), usually known as A. E. Housman, was an English classical scholar and poet, best known to the general public for his cycle of poems "A Shropshire Lad". Lyrical and almost epigrammatic in form, the poems wistfully evoke the dooms and disappointments of youth in the English countryside. Their beauty, simplicity and distinctive imagery appealed strongly to late Victorian and Edwardian taste, and to many early 20th-century English composers both before and after the First World War. Through their song-settings, the poems became closely associated with that era, and with Shropshire itself.
Document 9: The Iron Giant: The Iron Giant is a 1999 American animated science-fiction comedy-drama action film using both traditional animation and computer animation, produced by and directed by Brad Bird in his directorial debut. It is based on the 1968 novel "The Iron Man" by Ted Hughes (which was published in the United States as "The Iron Giant") and was scripted by Tim McCanlies from a story treatment by Bird. The film stars the voices of Eli Marienthal, Christopher McDonald, Jennifer Aniston, Harry Connick, Jr., John Mahoney, and Vin Diesel. Set during the Cold War in 1957, the film is about a young boy named Hogarth Hughes, who discovers a giant metallic robot who fell from space. With the help of beatnik artist Dean McCoppin, they attempt to prevent the U.S. military and Kent Mansley, a paranoid federal agent, from finding and destroying the Giant.
Document 10: Wilfred Owen: Wilfred Edward Salter Owen, MC (18 March 1893 – 4 November 1918) was an English poet and soldier, one of the leading poets of the First World War. His war poetry on the horrors of trenches and gas warfare was heavily influenced by his mentor Siegfried Sassoon, and stood in stark contrast both to the public perception of war at the time and to the confidently patriotic verse written by earlier war poets such as Rupert Brooke. Among his best-known works – most of which were published posthumously – are "Dulce et Decorum est", "Insensibility", "Anthem for Doomed Youth", "Futility", "Exposure" and "Strange Meeting".
Document 11: A.I. Artificial Intelligence: A.I. Artificial Intelligence, also known as A.I., is a 2001 American science fiction drama film directed by Steven Spielberg. The screenplay by Spielberg was based on a screen story by Ian Watson and the 1969 short story "Super-Toys Last All Summer Long" by Brian Aldiss. The film was produced by Kathleen Kennedy, Spielberg and Bonnie Curtis. It stars Haley Joel Osment, Jude Law, Frances O'Connor, Brendan Gleeson and William Hurt. Set in a futuristic post-climate change society, "A.I." tells the story of David (Osment), a childlike android uniquely programmed with the ability to love.
Document 12: Real Steel: Real Steel is a 2011 American science fiction sports film starring Hugh Jackman and Dakota Goyo and co-produced and directed by Shawn Levy for DreamWorks Pictures. The film is based on the short story "Steel", written by Richard Matheson, which was originally published in the May 1956 edition of "The Magazine of Fantasy & Science Fiction", and later adapted into a 1963 "Twilight Zone" episode, though screenwriter John Gatins placed the film in U.S. state fairs and other "old-fashioned" Americana settings. "Real Steel" was in development for several years before production began on June 24, 2010. Filming took place primarily in the U.S. state of Michigan. Animatronic robots were built for the film, and motion capture technology was used to depict the brawling of computer-generated robots and animatronics.
Document 13: John Betjeman: Sir John Betjeman, CBE ( ; 28 August 190619 May 1984) was an English poet, writer, and broadcaster who described himself in "Who's Who" as a "poet and hack". He was Poet Laureate of the United Kingdom from 1972 until his death.
Document 14: W. H. Auden: Wystan Hugh Auden ( ; 21 February 1907 – 29 September 1973) was an English-American poet. Auden's poetry was noted for its stylistic and technical achievement, its engagement with politics, morals, love, and religion, and its variety in tone, form and content. He is best known for love poems such as "Funeral Blues", poems on political and social themes such as "September 1, 1939" and "The Shield of Achilles", poems on cultural and psychological themes such as "The Age of Anxiety", and poems on religious themes such as "For the Time Being" and "Horae Canonicae."
Document 15: Toy Story: Toy Story is a 1995 American computer-animated buddy comedy adventure film produced by Pixar Animation Studios for Walt Disney Pictures. The directorial debut of John Lasseter, "Toy Story" was the first feature-length computer-animated film and the first feature film produced by Pixar. Taking place in a world where anthropomorphic toys pretend to be lifeless whenever humans are present, the film's plot focuses on the relationship between Woody, an old-fashioned pullstring cowboy doll (voiced by Tom Hanks), and Buzz Lightyear, an astronaut action figure (voiced by Tim Allen), as they evolve from rivals competing for the affections of Andy, their owner, to friends who work together to be reunited with Andy as his family prepares to move to a new home. The screenplay was written by Joss Whedon, Andrew Stanton, Joel Cohen and Alec Sokolow, based on a story by Lasseter, Pete Docter, Stanton and Joe Ranft. The film features music by Randy Newman, and was executive-produced by Steve Jobs and Edwin Catmull.
ground_truth: 1984