Question: What year was the film based on a book by the writer of Pippy Longstocking released?
Context: R. L. Stine's The Haunting Hour: Don't Think About It is a 2007 American children's horror film based on the children's book of the same name by R. L. Stine.  The film was directed by Alex Zamm, written by Dan Angel and Billy Brown, and stars Emily Osment, Cody Linley, Brittany Curran, and Tobin Bell.  It was released direct-to-DVD.  The plot follows a goth girl named Cassie (Emily Osment) moving into a new town and fascinated by the occult.  At a mysterious Halloween store, the store owner (Tobin Bell) insists on selling her an old book.  Stuck with her brother Max (Alex Winzenread) on Halloween night, she reads the book to him, despite the book's warnings not to read it out aloud or think about its monster.  The monster comes to life and captures Max.  Cassie, with help from her friends, must save Max and defeat the monster before their parents return from a Halloween party. The New Adventures of Pippi Longstocking is a 1988 American fantasy–adventure–musical film written and directed by Ken Annakin based on the books of the fictional character Pippi Longstocking, created by children's book author Astrid Lindgren.  While the title suggests a continuation of previous entries, the film is in fact a remake of the original story.  It was filmed in Fernandina Beach on Amelia Island and at soundstages in Jacksonville, Florida.  It was released in movie theaters worldwide in 13 languages by Columbia Pictures. Way of the Peaceful Warrior is a part-fictional, part-autobiographical book based upon the early life of the author Dan Millman.  The book has been a bestseller in many countries since its first publication in 1980.  The book initially had only modest sales, before Hal Kramer came out of retirement to republish the book, from the H. J. Kramer imprint of New World Library.  In early 2006, a film based on the novel, "Peaceful Warrior", was released. G.G. Communications was a film distribution company based in Boston, Massachusetts.  Headed by city native Nicholas W. Russo (credited in releases as "N.W. Russo"), it was responsible for the U.S. releases of various foreign films aimed at children.  G.G.'s titles included the "Pippi Longstocking" live-action films, Rolf Kauka's "Once Upon a Time", and the 1975 anime feature based on Hans Christian Andersen's "The Little Mermaid".  In the early 1980s, its films were released on VHS through the Video Gems label. Od ani holeh (Hebrew: עוד אני הולך) or Still Walking is a book and a film based on the book.  It is from film director Yaky Yosha's first novel, published in Hebrew in March 2008.  The novel was followed by a film based on the story.  Production began in the summer of 2008 in Tel Aviv.  According to Yosha: ""Still Walking"" is Shalom's older brother, and show the same youngsters pondering over the social and political state they live in, when they're a generation older.  The film, following the book, will track them down when all is without hope." The Brothers Lionheart (Swedish: Bröderna Lejonhjärta ) is a Swedish fantasy film which was released to cinemas in Sweden on 23 September 1977, directed by Olle Hellbom and based on the book with the same name, written by Astrid Lindgren.  It won Sweden's Guldbagge Award for Best Director in 1978. Freakonomics: The Movie is a 2010 American documentary film based on the 2005 book "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by economist Steven D. Levitt and writer Stephen J. Dubner.  The film premiered at the Tribeca Film Festival in April 2010 with a theatrical release later in the year.  The film received a lukewarm reception and a 65% fresh rating at Rottentomatoes. Märta Eleonora Tikkanen (born 3 April 1935) is a Swedish-speaking Finnish writer.  Born in Helsinki, she has worked as a reporter for "Hufvudstadsbladet" from 1956 to 1961.  She graduated from the University of Helsinki, Master of Arts in 1958 and received a Master of Philosophy in 1961.  Tikkanen was married to the writer Henrik Tikkanen.  A film based on her book "Manrape" ("Män kan inte våldtas", "Men Can't Be Raped"), directed by Jörn Donner, was released in 1978. Book of Dragons is a computer-animated/2D-animated short film based on the "How to Train Your Dragon" franchise.  It was produced by DreamWorks Animation and directed by Steve Hickner.  The short was released on November 15, 2011, on DVD and Blu-ray, along with "Gift of the Night Fury", another short film based on the "Dragons". Astrid Anna Emilia Lindgren (born Ericsson; ] ; 14 November 1907 – 28 January 2002) was a Swedish writer of fiction and screenplays.  She is best known for children's book series featuring Pippi Longstocking, Emil i Lönneberga, Karlsson-on-the-Roof, and the Six Bullerby Children ("Children of Noisy Village" in the US), as well as the children's fantasy novels "Mio, My Son", "Ronia the Robber's Daughter", and "The Brothers Lionheart".
Answer: 1977