Question: Robert Walser and Ira Levin are both a?

full_context: Document 1: Gabriel Levin: Gabriel Levin (Born 1948, Paris) is a poet, translator and essayist. He lives in Jerusalem with his wife and children. Levin is one of the founding editors of Ibis Editions, a small non-profit press devoted to the publication of the literature of the Levant, and serves as its Editor-at-large. Levin's work has appeared in numerous literary magazines, including PN Review, The Times Literary Supplement, the Chicago Review, Raritan and Parnassus."To these Dark Steps", a volume written in response to operation "Cast Lead" (2008), was set by British composer Alexander Goehr for tenor, children's choir, and ensemble and premiered September 2012 at the CBSO Centre in Birmingham. Levin is the son of the American novelist Meyer Levin (best known for "Compulsion", the first "non-fiction novel") and French novelist Tereska Torres.
Document 2: Hermann Hesse: Hermann Karl Hesse (] ; 2 July 1877 – 9 August 1962) was a German-born poet, novelist, and painter. His best-known works include "Demian", "Steppenwolf", "Siddhartha", and "The Glass Bead Game", each of which explores an individual's search for authenticity, self-knowledge and spirituality. In 1946, he received the Nobel Prize in Literature.
Document 3: Walser German: Walser German (German: "Walserdeutsch" ) and Walliser German ("Walliserdeutsch ", locally "Wallisertiitsch ") form a group of Highest Alemannic dialects spoken in parts of Switzerland (Valais, Ticino, Grisons), Italy (Piedmont, Aosta Valley), Liechtenstein, and Austria (Vorarlberg).
Document 4: Friedrich Dürrenmatt: Friedrich Dürrenmatt (] ; 5 January 1921 – 14 December 1990) was a Swiss author and dramatist. He was a proponent of epic theatre whose plays reflected the recent experiences of World War II. The politically active author's work included avant-garde dramas, philosophical crime novels, and macabre satire. Dürrenmatt was a member of the Gruppe Olten.
Document 5: Otto F. Walter: Otto F. Walter (5 June 1928 born as "Otto Friedrich Walter" – 24 September 1994) was a Swiss publisher (Walter Verlag), author and novelist, which is well known in the German language countries. Otto Friedrich Walter was the younger brother of Silja Walter, a Benedictine nun in the Fahr Abbey and also a popular writer.
Document 6: Robert Walser (musicologist): Robert Walser is an American musicologist associated with the "new musicology". He is author of the book "Running With the Devil: Power, Gender, and Madness in Heavy Metal Music", concerning heavy metal music. Walser currently is a member of the faculty and director of the Center for Popular Music Studies at Case Western Reserve University.
Document 7: Robert Walser (writer): Robert Walser (15 April 1878 – 25 December 1956) was a German-speaking Swiss writer.
Document 8: Levinson &amp; Link: Richard Levinson and William Link were television producers and writers who collaborated for 43 years, until Levinson's death. They created classic television detective series such as "Columbo", "Mannix", "Ellery Queen", "Murder, She Wrote" and "Scene of the Crime", as well as made-for-TV movies including "The Gun", "My Sweet Charlie", "That Certain Summer", "The Judge and Jake Wyler", "The Execution of Private Slovik", "Charlie Cobb: A Nice Night for a Hanging", "Rehearsal for Murder", and "Blacke's Magic". They also collaborated on two feature films: "The Hindenburg" (1975) and "Rollercoaster" (1977).
Document 9: This Perfect Day: This Perfect Day is a science fiction novel by American writer Ira Levin, about a technocratic dystopia. Levin won a Prometheus Award in 1992 for this novel. "This Perfect Day" is one of two Levin novels yet to be adapted to film (the other being "Son of Rosemary", the sequel to "Rosemary's Baby").
Document 10: A Kiss Before Dying (1991 film): A Kiss Before Dying is a 1991 British-American neo-noir film. It was directed by James Dearden, and based on the novel by Ira Levin, whose book won the 1954 Edgar Award for "Best First Novel." The drama features Matt Dillon, Sean Young, Max von Sydow and Diane Ladd. The story had been previously adapted under the same name in 1956. This was the last film to use the 75th Anniversary 1990s Universal Pictures logo.
Document 11: Carl Seelig: Carl Seelig (born May 11, 1894, Zurich; died February 15, 1962, Zurich) was a German-Swiss writer and patron. He was best known as a friend, promoter and guardian of Robert Walser and the first biographer of Albert Einstein.
Document 12: Robert Shvarc: Robert Shvarc (10 December 1932 – 25 April 2003) born in Sarajevo of Bosnia, 10 December 1932, is a Hebrew and Albanian, recognized as one of the best translators from German of the 20th century and beginning of new millennium, writer and poet. His parents were respectively mother from Elbasan and father an Hebrew from Austria and lived in Shkodra, Albania. There Robert Shvarc grew up as a lover of Albanian mother's language and is the first who brought for the Albanian reader some masterpieces of literature as the novels of Gabriel García Márquez, Erich Maria Remarque, Lion Feuchtwanger, dramas of Bertolt Brecht; books of poetry from Goethe, Schiller and Heine. Also Shvarc translated in German best books of many Albanian poets and writers.
Document 13: Meyer Levin: Meyer Levin (October 7, 1905 – July 9, 1981) was an American novelist. Perhaps best known for his work on the Leopold and Loeb case, Levin worked as a journalist (for the "Chicago Daily News" and, from 1933–39, as an editor for "Esquire").
Document 14: Ira Levin: Ira Marvin Levin (August 27, 1929 – November 12, 2007) was an American novelist, playwright, and songwriter. His most noted works include the novels "A Kiss Before Dying" (1953), "Rosemary's Baby" (1967), "The Stepford Wives" (1972), and "The Boys from Brazil" (1976), as well as the play "Deathtrap" (1978). Many of his novels and plays have been adapted to film.
Document 15: Deathtrap (film): Deathtrap is a 1982 American thriller film based on Ira Levin's play of the same name, directed by Sidney Lumet from a screenplay by Levin and Jay Presson Allen, starring Michael Caine, Dyan Cannon and Christopher Reeve. Critics gave the film mostly favorable reviews while noting its plot similarities to Caine's 1972 film "Sleuth".
ground_truth: writer