Question: A Spool of Blue Thread is a novel by the literary critic of what nationality?

full_context: Document 1: Katherine Anne Porter: Katherine Anne Porter (May 15, 1890 – September 18, 1980) was an American journalist, essayist, short story writer, novelist, and political activist. Her 1962 novel "Ship of Fools" was the best-selling novel in America that year, but her short stories received much more critical acclaim. She is known for her penetrating insight; her work deals with dark themes such as betrayal, death and the origin of human evil. In 1990, Recorded Texas Historic Landmark number 2905 was placed in Brown County, Texas, to honor the life and career of Porter.
Document 2: Ann Beattie: Ann Beattie (born September 8, 1947) is an American novelist and short story writer. She has received an award for excellence from the American Academy and Institute of Arts and Letters and the PEN/Malamud Award for excellence in the short story form. Her work has been compared to that of Alice Adams, J.D. Salinger, John Cheever, and John Updike. She holds an undergraduate degree from American University and a master's degree from the University of Connecticut.
Document 3: Eudora Welty: Eudora Alice Welty (April 13, 1909 – July 23, 2001) was an American short story writer and novelist who wrote about the American South. Her novel "The Optimist's Daughter" won the Pulitzer Prize in 1973. Welty was awarded the Presidential Medal of Freedom, among numerous awards including the Order of the South. She was the first living author to have her works published by the Library of America. Her house in Jackson, Mississippi has been designated as a National Historic Landmark and is open to the public as a house museum.
Document 4: John Updike: John Hoyer Updike (March 18, 1932 – January 27, 2009) was an American novelist, poet, short story writer, art critic, and literary critic. One of only three writers to win the Pulitzer Prize for Fiction more than once (the others were Booth Tarkington and William Faulkner), Updike published more than twenty novels, more than a dozen short-story collections, as well as poetry, art and literary criticism and children's books during his career.
Document 5: Jonathan Franzen: Jonathan Earl Franzen (born August 17, 1959) is an American novelist and essayist. His 2001 novel "The Corrections", a sprawling, satirical family drama, drew widespread critical acclaim, earned Franzen a National Book Award, was a Pulitzer Prize for Fiction finalist, earned a James Tait Black Memorial Prize and was shortlisted for the International IMPAC Dublin Literary Award. His novel "Freedom" (2010) garnered similar praise and led to an appearance on the cover of "Time" magazine alongside the headline "Great American Novelist".
Document 6: Annie Dillard: Annie Dillard (born April 30, 1945) is an American author, best known for her narrative prose in both fiction and non-fiction. She has published works of poetry, essays, prose, and literary criticism, as well as two novels and one memoir. Her 1974 work "Pilgrim at Tinker Creek" won the 1975 Pulitzer Prize for General Nonfiction. From 1980, Dillard taught for 21 years in the English department of Wesleyan University, in Middletown, Connecticut.
Document 7: Texas 25: Texas 25 is an album by Scottish rock band Texas, released on 16 February 2015. The album was released to celebrate the band's 25th anniversary and features eight reworked Texas tracks along with four new songs.
Document 8: Ttyl (novel): ttyl is a young adult novel written by Lauren Myracle and is also the first book in the 'Internet Girls' series. In 2004, it gained attention for being the first novel written entirely in the style of instant messaging conversation. The novel was a "New York Times", "Publishers Weekly", and a "Book Sense" bestseller. "ttyl" is internet slang for "Talk to you later".
Document 9: Fates and Furies: Fates and Furies is a 2015 novel by American author Lauren Groff. It is Groff's third novel and fourth book. The book takes place in New York, and is essentially about how the different people in a relationship can have disparate views on the relationship. It has drawn many comparisons to the novel "Gone Girl", based on its themes, structure, and the dominance of the female in the key relationship of the plot. The novel was widely and highly praised by critics, with negative reviews focusing on moments of implausibility in the novel's second half. It was perhaps the most talked about English-language novel of 2015, and was on more critics' end-of-year lists than any other.
Document 10: A Spool of Blue Thread: A Spool of Blue Thread, published in 2015, is Anne Tyler’s 20th novel.
Document 11: Anne Tyler: Anne Tyler (born October 25, 1941) is an American novelist, short story writer, and literary critic. She has published 20 novels, the best known of which are "Dinner at the Homesick Restaurant" (1982), "The Accidental Tourist" (1985), and "Breathing Lessons" (1988). All three were finalists for the Pulitzer Prize for Fiction with "Breathing Lessons" winning the prize for 1989. She has also won the Janet Heidinger Kafka Prize, the Ambassador Book Award, and the National Book Critics Circle Award. In 2012 she was awarded "The Sunday Times" Award for Literary Excellence. She is recognized for her fully developed characters, her “brilliantly imagined and absolutely accurate detail,” and her “rigorous and artful style” and “astute and open language.” While many of her characters have been described as quirky or eccentric, she has managed to make them seem real through skillfully fleshing out their inner lives in great depth. Her subject in all her novels has been the American family and marriage: the boredom and exasperating irritants endured by partners, children, siblings, parents; the desire for freedom pulling against the tethers of attachments and conflicted love; the evolution over time of familial love and sense of duty. Tyler celebrates unremarkable Americans and the ordinary details of their everyday lives. Because of her style and subject matter, she has been compared to John Updike, to Jane Austen, and to Eudora Welty, among others.
Document 12: The Collected Essays and Occasional Writings of Katherine Anne Porter: The Collected Essays and Occasional Writings of Katherine Anne Porter
Document 13: The Storyteller (Picoult novel): The Storyteller is the twentieth novel written by the author Jodi Picoult.
Document 14: Gathering Blue: Gathering Blue is a young adult-social science novel, written by Lois Lowry and released in the year 2000. It is a companion book to "The Giver" (1993) being set in the same future time period and universe, treating some of the same themes, and is followed by "Messenger" (2004), and "Son" (2012) in "The Giver Quartet".
Document 15: Bloomsbury 21: Bloomsbury 21 is a series of 21 books published in 2007 by Bloomsbury to celebrate their 21st anniversary. The books are limited editions of 21 of Bloomsbury's most famous published works. The books have covers featuring a white background with a picture of the original cover of the particular book, tilted in such a way that part of the picture is cut off and appears on the next book in the series. When the books are placed side by side in numerical order, their covers form a panorama of the 21 original book covers. Each book features an introduction by a fellow author and reading group guides. On the spine of each book is its number in the series above the number 21 to indicate the book's place within the series. Authors whose works have been included in the series include Margaret Atwood and J.K. Rowling.
ground_truth: American