Question: Are Isaac Bashevis Singer and Ernesto Sabato both writers ?

Context paragraphs:
Animal rights and the Holocaust: Several writers, including Jewish Nobel Prize laureate Isaac Bashevis Singer, and animal rights groups have drawn a comparison between the treatment of animals and the Holocaust.  The comparison is regarded as controversial, and has been criticized by organizations that campaign against antisemitism, including the Anti-Defamation League (ADL) and the United States Holocaust Memorial Museum.

Rencontre au Sommet: "Rencontre au Sommet.  Dialogue between Anthony Burgess and Isaac Bashevis Singer" is an 86-page book containing the complete transcripts of conversations between Anthony Burgess and Isaac Bashevis Singer when they met for a Swedish television documentary in 1985.

Ernesto Sabato: Ernesto Sabato (June 24, 1911 – April 30, 2011) was an Argentine writer, painter and physicist.  According to the BBC he "won some of the most prestigious prizes in Hispanic literature" and "became very influential in the literary world throughout Latin America".  Upon his death "El País" dubbed him the "last classic writer in Argentine literature".

Israel Joshua Singer: Israel Joshua Singer (Yiddish: ישראל יהושע ; November 30, 1893, Biłgoraj, Congress Poland — February 10, 1944 New York) was a Polish American novelist who wrote in Yiddish.  He was born Yisruel Yehoyshye Zinger, the son of Pinchas Mendl Zinger, a rabbi and author of rabbinic commentaries, and Basheva Zylberman.  He was the brother of author Isaac Bashevis Singer and novelist Esther Kreitman.  He married Genia Kuper.  His eldest son, Yasha, died of influenza before the family's emigration to America.  His younger son, Joseph Singer was the translator for both his father's works and his uncle, Isaac Bashevis Singer.  Joseph a painter and writer like his father married June Flaum Singer who went on to become a writer.  They had four children: Sharon Salinger, Brett Singer, IJ Singer and Valerie Singer.  The three daughters followed in the family business and are also published poets and novelists.

Isaac in America: A Journey with Isaac Bashevis Singer: Isaac in America: A Journey with Isaac Bashevis Singer

Irene Lieblich: Irene Lieblich (April 20, 1923 – December 28, 2008) was a Polish-born artist and Holocaust survivor noted for illustrating the books of Nobel laureate Isaac Bashevis Singer and for her paintings highlighting Jewish life and culture.  She is also a distant cousin of noted Yiddish language author and playwright Isaac Leib Peretz.

Shop Talk: Shop Talk: A Writer and His Colleagues and Their Work is a collection of previously published interviews with important 20th-century writers by novelist Philip Roth.  Among the writers interviewed are Primo Levi, Aharon Appelfeld, Ivan Klima, Isaac Bashevis Singer, Milan Kundera, and Edna O'Brien.  In addition, the book contains a discussion with Mary McCarthy about Roth's novel "The Counterlife" and a "New Yorker" essay on Saul Bellow.  Roth's trip to Israel to interview Appelfeld inspired his novel "Operation Shylock".

Zlateh the Goat and Other Stories: Zlateh the Goat and Other Stories is a 1966 book of short stories written by Polish-American author Isaac Bashevis Singer.  The stories were translated from Yiddish, which was Singer's language of choice for writing, by Singer and Elizabeth Shub.  Maurice Sendak provided illustrations for the book.  Among other recognition the book received, it was a runner-up for the Newbery Medal (i.e., a Newbery Honor Book) in 1967.  It has been translated into many languages.

Isaac Bashevis Singer: Isaac Bashevis Singer (Yiddish: יצחק באַשעװיס זינגער‎ ; November 21, 1902 – July 24, 1991) was a Polish-born Jewish writer in Yiddish, awarded the Nobel Prize in Literature in 1978.  The Polish form of his birth name was Icek Hersz Zynger.  He used his mother's first name in an initial literary pseudonym, "Izaak Baszewis", which he later expanded.  He was a leading figure in the Yiddish literary movement, writing and publishing only in Yiddish.  He was also awarded two U.S. National Book Awards, one in Children's Literature for his memoir "A Day Of Pleasure: Stories of a Boy Growing Up in Warsaw" (1970) and one in Fiction for his collection "A Crown of Feathers and Other Stories" (1974).

Esther Kreitman: Hinde Ester Singer Kreytman (31 March 1891 – 13 June 1954), known in English as Esther Kreitman, was a Yiddish-language novelist and short story writer.  She was born in Biłgoraj, Congress Poland to a rabbinic Jewish family.  Her younger brothers Israel Joshua Singer and Isaac Bashevis Singer subsequently became writers.

Supporting paragraphs: Isaac Bashevis Singer Ernesto Sabato
Answer: yes