Question: The author of "We're Going on a Bear Hunt" has written how many books?
Context: Fr.  Bobby Jose Kattikad popularly known as 'Bobbyachan' or 'Fr.  Bobby Jose Capuchin' is a Roman Catholic priest from Order of Friars Minor Capuchin in India, known for his preaching and especially evangelization through television, radio and other media.  He founded Theo Publications in 2002, which publishes many books related to spirituality.  Fr.  Bobby is also author for many books which gained popularity around spirituality of malayalam speaking world.  The television preaching programs called Gurucharanam in Shalom TV India and many other programs are led by him.  Those programs are reported to have large number of viewers.  He also leads growth retreats which is conducted all over the world among Malayali communities.  For a long time, he was associated with conducting growth retreats in San Pio retreat centre, Kovilthottam, Kollam.  Fr.  Bobby was appointed as the first director and guardian of the retreat center.  He is an editor and contributor for a magazine called Theo Manushyasnehi. Arnold Roger Manvell (10 October 1909 – 30 November 1987) was the first director of the British Film Academy (a post he filled for over a decade), author of many books on films and film-making, and authored and co-authored (with Heinrich Fraenkel) many books on Nazi Germany, including biographies of Adolf Hitler, Rudolf Hess, Heinrich Himmler, Joseph Goebbels and Hermann Göring.  During World War II he worked in the Ministry of Information, creating propaganda films for the British government.  In his career, he also lectured in universities in as many as forty countries in three continents (America, Europe and the Middle East), and made a name as a broadcaster and screenwriter.  He joined the Boston University faculty in 1975 teaching film history classes at the College of Communications.  Manvell was named University Professor in 1982. We're Going on a Bear Hunt is a 1989 children's picture book written by Michael Rosen and illustrated by Helen Oxenbury.  It has won numerous awards and was the subject of a "Guinness World Record" for "Largest Reading Lesson" with a book-reading attended by 1,500 children, and an additional 30,000 listeners online, in 2014. Chelangatt Gopalakrishnan (June 6, 1932 - June 4, 2010) was born in Cherthala Alappuzha dist.  in Kerala to Sri Nediyedathu Kesava Pillai and Thrikkeparambil Ammukkutti Amma.  After graduation, he started his career as a journalist in a regional newspaper; Malayali.  Later he worked for some other newspapers including Mathrubhumi.  During this time, he established his own name in the film journalism.  Several forgotten personalities including J.C. Daniel, the father of Malayalam Cinema, have been disclosed before readers and public by him.  During this time he had released several books.  Most of them are about cinema and its history.  The historical narrations of cinema have been started from the birth of world cinema till the contemporary Malayalam films.  The renowned Malayalam Film Maker Adoor Gopalakrishnan in his book Cinemayude Lokam, which won many awards including the award from Government of India says ; "The history of Malayalam Cinema is not started with stars born with fortunes, from sky.  But, it is the tearful story of some, who experimented with their lives and assets.  Most of the experiments had been tragedies.  We got that history from the articles written by Chelangatt Gopalakrishnan.  S. Guptan Nair called Chelangatt Gopalakrishnan, the Chief Architect of Malayalam Film Literature and Journalism.  He was in the Kerala State Film Awards Jury for several years.  Many books related with novel, biographies, history and technical aspects of film making have been written by him.  He had run a film studio named 'Ajanta Studio' at Aluva.  Many classical films including 'Olavum Theeravum' written by M.T. Vasudevan Nair have been filimized at this studio.  He had written more than 20 books about cinema alone.  Vincent Muthal Vincent Vare, Mukhathodu Mukham, The History of World Cinema, The History of Indian Cinema, The History of Malayalam Cinema, The History of Film Persons in Kerala, The History of Malayalam Journalism etc., are few among them.  He was a regular writer about many of the prominent periodicals in Malayalam language. Karujaht Pärnumaal (Estonian; English: Bear hunt in Pärnu county ) is the first Estonian narrative film 1914, directed by Johannes Pääsuke. Michael Wayne Rosen (born 7 May 1946) is an English children's novelist and poet, the author of 140 books.  He served as Children's Laureate from June 2007 to June 2009.  He has been a TV presenter and a political columnist. "'Kukaklek" is a lake in southern Alaska, near the base of the Alaska Peninsula.  Located in Katmai National Park and Preserve, the lake is 46080 acre in area and is the source for the Alagnak River, a designated Wild River.  Notable for its excellent sport fishing, it is rated as one of the top wilderness destinations in Alaska.  Wildlife in the area is typical of the Alaskan Peninsula, with grizzly bears, moose, gray wolf, and caribou frequently seen around the lake's shores.  Grizzly bears in particular are frequently seen around the lake during the salmon run.  The lake has recently been the source for a controversial grizzly bear hunt in Katmai Preserve. The Devonshire Hunting Tapestries are a group of four magnificent Flemish tapestries dating from the mid-fifteenth century.  These enormous works, each over 3 metres wide, depict men and women in fashionable dress of the early fifteenth century hunting in a forest.  The tapestries formerly belonged to the Duke of Devonshire.  The 6th Duke described using his 'spare' tapestry to insulate the Long Gallery at Hardwick Hall in the 1840s, a practice which saved these rare Gothic hangings from being discarded.  The tapestries depict a "Deer Hunt", "Falconry", a "Swan and Otter Hunt" and a "Boar and Bear Hunt".  The hunt was a particularly powerful theme and would have been a familiar pastime to many of the high-born individuals and families who owned tapestries.  Hunting was both a stylized sport and an important source of the only meats considered noble. Alexippus (Ancient Greek: Ἀλέξιππος ) was an ancient Greek physician who was mentioned by Plutarch as having received a letter from Alexander the Great himself, to thank him for having cured one of his officers, a man named Peucestas, of a wound incurred during a bear hunt probably around 327 BC. Norbert Rosing (born 1953) is a German photographer who worked for such magazines as GEO, Terre Sauvage, BBC Wildlife, Photo Technik International, National Geographic and others.  In 2000 he published his first photo for the Nat Geo story called "Bear Beginnings: New Life on the Ice" and since December of the same year worked there.  He is also an author of many books including "Cheetahs", "German National Parks", "Unknown Germany", "The World of the Polar Bear", "Yellowstone: Land of Fire and Ice", and "Yellowstone: America's Playground".
Answer: 140