Question: In what year was the owner of Dhalgren's publisher formed?

full_context: Document 1: On the Origin of Species: On the Origin of Species was first published on Thursday 24 November 1859, priced at fifteen shillings with a first printing of 1250 copies. The book had been offered to booksellers at Murray's autumn sale on Tuesday 22 November, and all available copies had been taken up immediately. In total, 1,250 copies were printed but after deducting presentation and review copies, and five for Stationers' Hall copyright, around 1,170 copies were available for sale. Significantly, 500 were taken by Mudie's Library, ensuring that the book promptly reached a large number of subscribers to the library. The second edition of 3,000 copies was quickly brought out on 7 January 1860, and incorporated numerous corrections as well as a response to religious objections by the addition of a new epigraph on page ii, a quotation from Charles Kingsley, and the phrase "by the Creator" added to the closing sentence. During Darwin's lifetime the book went through six editions, with cumulative changes and revisions to deal with counter-arguments raised. The third edition came out in 1861, with a number of sentences rewritten or added and an introductory appendix, An Historical Sketch of the Recent Progress of Opinion on the Origin of Species, while the fourth in 1866 had further revisions. The fifth edition, published on 10 February 1869, incorporated more changes and for the first time included the phrase "survival of the fittest", which had been coined by the philosopher Herbert Spencer in his Principles of Biology (1864).
Document 2: Half Bad: Sally Green submitted "Half Bad" to an agent in January 2013; in March, editorial director Ben Horslen acquired the manuscript for Penguin Books children's imprint Puffin Books, billing it "the book of the Bologna Children's Book Fair" after a 6-figure bidding war. In the run up to its publication in the UK on 3 March 2014, international rights to Half Bad sold rapidly; within 13 weeks of acquisition, it had sold in 25 territories; by November 2013, 36. Upon publication day, it broke the Guinness World Record for 'Most Translated Book by a Debut Author, Pre-publication' with 45 different translations.
Document 3: Bantam Books: Bantam Books is an American publishing house owned entirely by parent company Random House, a subsidiary of Penguin Random House; it is an imprint of the Random House Publishing Group. It was formed in 1945 by Walter B. Pitkin, Jr., Sidney B. Kramer, and Ian and Betty Ballantine, with funding from Grosset & Dunlap and Curtis Publishing Company. It has since been purchased several times by companies including National General, Carl Lindner's American Financial and, most recently, Bertelsmann; it became part of Random House in 1998, when Bertelsmann purchased it to form Bantam Doubleday Dell. It began as a mass market publisher, mostly of reprints of hardcover books, with some original paperbacks as well. It expanded into both trade paperback and hardcover books, including original works, often reprinted in house as mass-market editions.
Document 4: Cemex: Lorenzo Zambrano was the chairman and chief executive officer until his death on May 21, 2014. About one-third of the company's sales come from its Mexico operations, a quarter from its plants in the U.S., 15% from Spain, and smaller percentages from its plants around the world.
Document 5: Boston: The city's growing Latino population has given rise to a number of local and regional Spanish-language newspapers. These include El Planeta (owned by the former publisher of The Boston Phoenix), El Mundo, and La Semana. Siglo21, with its main offices in nearby Lawrence, is also widely distributed.
Document 6: In Cold Blood: "In Cold Blood" was first published as a four-part serial in "The New Yorker", beginning with the September 25, 1965 issue. The piece was an immediate sensation, particularly in Kansas, where the usual number of "New Yorker" copies sold out immediately. "In Cold Blood" was first published in book form by Random House on January 17, 1966. The book, however, was copyrighted in 1965, and this date appears on the title page of most printings of the book and even in some library indices as the original publication date. The Library of Congress lists 1966 as the publication date and 1965 as the copyright date.
Document 7: Fire and Fury: The book was originally scheduled to go on sale on January 9, 2018, but the publisher, Henry Holt and Company, moved up the release date to January 5 due to ``unprecedented demand. ''An excerpt of the book was released by New York magazine on January 3, 2018. The same day, other media outlets reported on further content of the book; for example, The Guardian reported`` explosive'' highlights, stating they were based on the full book. That day, preorders of the book made it the number 1 bestseller in the country. Fire and Fury debuted at number one on The New York Times Best Seller list, and within a week had become the fastest selling book in the publisher's history, with over 700,000 orders shipped and 1.4 million orders placed.
Document 8: Guinness World Records: Guinness Superlatives (later Guinness World Records) Limited was formed in 1954 to publish the first book. Sterling Publishing owned the rights to the Guinness book in the US for decades. The group was owned by Guinness PLC and subsequently Diageo until 2001, when it was purchased by Gullane Entertainment. Gullane was itself purchased by HIT Entertainment in 2002. In 2006, Apax Partners purchased HiT and subsequently sold Guinness World Records in early 2008 to the Jim Pattison Group, the parent company of Ripley Entertainment, which is licensed to operate Guinness World Records' Attractions. With offices in New York City and Tokyo, Guinness World Records' global headquarters remain in London, while its museum attractions are based at Ripley headquarters in Orlando, Florida, US.
Document 9: Dover Publications: Dover Publications, also known as Dover Books, is an American book publisher founded in 1941 by Hayward Cirker and his wife, Blanche. It primarily publishes reissues, books no longer published by their original publishers. These are often, but not always, books in the public domain. The original published editions may be scarce or historically significant. Dover republishes these books, making them available at a significantly reduced cost.
Document 10: W. W. Norton & Company: W.W. Norton & Company is an American publishing company based in New York City. It has been owned wholly by its employees since the early 1960s. The company is known for its ``Norton Anthologies ''(particularly The Norton Anthology of English Literature) and its texts in the Norton Critical Editions series, the latter of which are frequently assigned in university literature courses.
Document 11: Department store: The first department store in Spain was Almacenes el Siglo opened in October 1881 in Barcelona. Following the 2002 closure by the Australian group Partridges of their SEPU (Sociedad Española de Precios Unicos) department store chain, which was one of Spain's oldest, the market is now dominated by El Corte Inglés, founded in 1934 as a drapery store. El Corte Inglés stores tend to be vast buildings, selling a very broad range of products and the group also controls a number of other retail formats including supermarket chain 'Supercor' and hypermarket chain 'Hipercor'. Other competitors such as 'Simago' and 'Galerías Preciados' closed in the 1990s, however El Corte Inglés, faces major competition from French discount operators such as Carrefour and Auchan.
Document 12: Miami: Several large companies are headquartered in or around Miami, including but not limited to: Akerman Senterfitt, Alienware, Arquitectonica, Arrow Air, Bacardi, Benihana, Brightstar Corporation, Burger King, Celebrity Cruises, Carnival Corporation, Carnival Cruise Lines, Crispin Porter + Bogusky, Duany Plater-Zyberk & Company, Espírito Santo Financial Group, Fizber.com, Greenberg Traurig, Holland & Knight, Inktel Direct, Interval International, Lennar, Navarro Discount Pharmacies, Norwegian Cruise Lines, Oceania Cruises, Perry Ellis International, RCTV International, Royal Caribbean Cruise Lines, Ryder Systems, Seabourn Cruise Line, Sedano's, Telefónica USA, UniMÁS, Telemundo, Univision, U.S. Century Bank, Vector Group and World Fuel Services. Because of its proximity to Latin America, Miami serves as the headquarters of Latin American operations for more than 1400 multinational corporations, including AIG, American Airlines, Cisco, Disney, Exxon, FedEx, Kraft Foods, LEO Pharma Americas, Microsoft, Yahoo, Oracle, SBC Communications, Sony, Symantec, Visa International, and Wal-Mart.
Document 13: Manning Publications: Manning Publications is an American publisher established by Lee Fitzpatrick and Marjan Bace that publishes books on computer technology topics, with a particular focus on web development. Their distinctive brand features illustrations from the 1805 edition of Sylvain Maréchal's four-volume compendium of regional dress customs on the covers of many of their books.
Document 14: Dhalgren: "Dhalgren" was officially published in January, 1975 (with copies available on bookshelves as early as the first week in December, 1974), as a paperback original (a Frederik Pohl selection) by Bantam Books. The Bantam edition went through 19 printings, selling slightly more than a million copies.
Document 15: Random House: Penguin Random House Grupo Editorial is Random House's Spanish-language division, targeting markets in Spain and South and Central America. It is headquartered in Barcelona with locations in Argentina, Chile, Colombia, Mexico, Uruguay, and the United States. From 2001 until November 2012, it was a joint venture with Italian publisher Mondadori (Random House Mondadori). Upon Bertelsmann's acquisition of Mondadori's stake in the JV, the name was kept temporarily four months. Some authors published by Penguin Random House Grupo Editorial include Dr. César Lozano, Yordi Rosado, Dr. Nancy Alvarez and Alberto Sardiñas.
ground_truth: 2001
sub_queries: Who published Dhalgren? Answer: Bantam Books
Bantam Books >> owned by Answer: Random House
Which year witnessed the formation of Random House ? Answer: 2001