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?

Context articles: Kurt Vonnegut
Bernard Vonnegut I
Kurt Vonnegut's Monkey House
Kilgore Trout
A Man Without a Country
Clemens Vonnegut
Slaughterhouse-Five
Breakfast of Champions
Kurt Vonnegut Sr.
Granfalloon

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).
Bernard Vonnegut I, WAA, FAIA, (August 8, 1855 – August 7, 1908) was an American lecturer and architect active in late-nineteenth and early-twentieth-century Indiana.
 He was a co-founder of the locally renowned Indianapolis architectural firm of Vonnegut and Bohn, and was active in a range of residential, religious, institutional, civic, and commercial commissions.
 He is the namesake and grandfather of scientist Bernard Vonnegut, father of the architect Kurt Vonnegut Sr., and grandfather of author Kurt Vonnegut.
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".
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.
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 Later published works of Vonnegut's were all published posthumously, and consisted almost entirely of previously unpublished material from early in his career.
Clemens Vonnegut Sr. (November 20, 1824 – December 13, 1906) was a German emigrant to the United States and successful businessman.
 He was the patriarch of the prominent German-American Vonnegut clan (later Schnull-Vonnegut) of Indiana – he was the father and grandfather of architects Bernard Vonnegut I and Kurt Vonnegut Sr., respectively, and great-grandfather of scientist Bernard Vonnegut and author Kurt Vonnegut Jr.
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.
"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.
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.
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.