Question: Author Kurt Vonnegut, who is most famous for his novel Slaughterhouse-Five, created Granfalloon, which is defined as a "false karass" in the fictional religion of what?

full_context: Document 1: A Man Without a Country: A Man Without a Country (subtitle: "A Memoir Of Life In George W Bush's America") is an essay collection published in 2005 by the author Kurt Vonnegut. The extremely short essays that make up this book deal with topics ranging from the importance of humor, to problems with modern technology, to Vonnegut's opinions on the differences between men and women. Most prevalent in the text, however, are those essays that elucidate Vonnegut's opinions on politics, and the issues in modern American society, often from a decidedly humanistic perspective. In January 2007, Vonnegut indicated that he intended this to be his final work, a statement that proved to be correct with his death in April 2007. Later published works of Vonnegut's were all published posthumously, and consisted almost entirely of previously unpublished material from early in his career.
Document 2: Slaughterhouse-Five: Slaughterhouse-Five, or The Children's Crusade: A Duty-Dance with Death (1969) is a satirical novel by Kurt Vonnegut about the World War II experiences and journeys through time of Billy Pilgrim, from his time as an American soldier and chaplain's assistant, to postwar and early years. It is generally recognized as Vonnegut's most influential and popular work. A central event is Pilgrim's surviving the Allies' firebombing of Dresden as a prisoner-of-war. This was an event in Vonnegut's own life, and the novel is considered semi-autobiographical.
Document 3: Breakfast of Champions: "Breakfast of Champions, or Goodbye Blue Monday," published in 1973, is the seventh novel by the American author Kurt Vonnegut. Set predominantly in the fictional town of Midland City, Indiana, it is the story of "two lonesome, skinny, fairly old white men on a planet which was dying fast." One of these men, Dwayne Hoover, is a charming but deeply deranged Pontiac dealer, and extensive land and franchise owner, whose mental illness causes him to believe that a science fiction story by the other man, Kilgore Trout, is the literal truth. Trout, a largely unknown pulp science fiction writer who has appeared in several other Vonnegut novels, looks like a crazy old man but is in fact relatively sane. As the novel opens, Trout hitchhikes toward Midland City to appear at an art convention where he is destined to meet Dwayne Hoover and unwittingly inspire him to run amok.
Document 4: Kurt Vonnegut's Monkey House: Kurt Vonnegut's Monkey House is a Canadian television anthology series which aired on the Showtime network from 1991 to 1993. Author Kurt Vonnegut hosted the series himself, presenting dramatizations of several of his short stories from the collection "Welcome to the Monkey House".
Document 5: Kurt Vonnegut Sr.: Kurt Vonnegut Sr. (November 24, 1884 – October 1, 1957) was an American architect and architectural lecturer active in early- to mid-twentieth-century Indianapolis, Indiana. A member of the American Institute of Architects, he was partner in the firms of Vonnegut & Bohn, Vonnegut, Bohn & Mueller, and Vonnegut, Wright, and Yeager. He designed several churches, banks, and became the inhouse architect for Indiana Bell and Hooks Drug stores (prior to World War II), practicing extensively in the Art Deco style. He was the father of chemist Bernard Vonnegut and author Kurt Vonnegut Jr.
Document 6: Galápagos (novel): Galápagos is the eleventh novel written by American author Kurt Vonnegut. The novel questions the merit of the human brain from an evolutionary perspective. The title is both a reference to the islands on which part of the story plays out, and a tribute to Charles Darwin on whose theory Vonnegut relies to reach his own conclusions. It was first published in 1985 by Delacorte Press.
Document 7: Joseph Heller: Joseph Heller (May 1, 1923 – December 12, 1999) was an American author of novels, short stories, plays and screenplays. His best-known work is the novel "Catch-22", a satire on war and bureaucracy, whose title has become a synonym for an absurd or contradictory choice.
Document 8: Kurt Vonnegut: Kurt Vonnegut Jr. ( ; November 11, 1922April 11, 2007) was an American writer. In a career spanning over 50 years, Vonnegut published 14 novels, three short story collections, five plays, and five works of non-fiction. He is most famous for his darkly satirical, best-selling novel "Slaughterhouse-Five" (1969).
Document 9: Fashionable Nonsense: Fashionable Nonsense: Postmodern Intellectuals' Abuse of Science (French: "Impostures Intellectuelles" ), published in the UK as Intellectual Impostures, is a book by physicists Alan Sokal and Jean Bricmont. Sokal is best known for the Sokal Affair, in which he submitted a deliberately absurd article to "Social Text", a critical theory journal, and was able to get it published.
Document 10: Shaggy God story: A shaggy God story is a minor science fiction genre characterized by an attempt to explain Biblical concepts with science fiction tropes. The term was coined by writer and critic Brian W. Aldiss in a pseudonymous column in the October 1965 issue of "New Worlds". The term is a pun on the concept of a shaggy dog story.
Document 11: Parody religion: A parody religion or mock religion is a belief system that challenges spiritual convictions of others, often through humor, satire, or burlesque (literary ridicule). Often created to achieve a specific purpose related to another belief system, a parody religion can be a parody of several religions, sects, gurus, cults, or new religious movements at the same time or even a parody of no particular religion, instead parodying the concept of religious belief itself. In some parody religions, emphasis is on having fun and being a convenient excuse for pleasant social interaction among the like-minded (e.g., the Church of the SubGenius). Other parody religions target a specific religion, sect, cult, or new religious movement.
Document 12: God Bless You, Dr. Kevorkian: God Bless You, Dr. Kevorkian, by Kurt Vonnegut, is a collection of short fictional interviews written by Vonnegut and first broadcast on WNYC. The title parodies that of Vonnegut's 1965 novel "God Bless You, Mr. Rosewater".
Document 13: Kilgore Trout: Kilgore Trout is a fictional character created by author Kurt Vonnegut. In Vonnegut's work, Trout is a notably unsuccessful author of paperback science fiction novels.
Document 14: Absurdist fiction: Absurdist fiction is a genre of fictional narrative (traditionally, literary fiction), most often in the form of a novel, play, poem, or film, that focuses on the experiences of characters in situations where they cannot find any inherent purpose in life, most often represented by ultimately meaningless actions and events that call into question the certainty of existential concepts such as truth or value. Common elements in absurdist fiction include satire, dark humor, incongruity, the abasement of reason, and controversy regarding the philosophical condition of being "nothing." Works of absurdist fiction often explore agnostic or nihilistic topics.
Document 15: Granfalloon: A granfalloon, in the fictional religion of Bokononism (created by Kurt Vonnegut in his 1963 novel "Cat's Cradle"), is defined as a "false karass". That is, it is a group of people who affect a shared identity or purpose, but whose mutual association is meaningless.
ground_truth: Bokononism