Question: Moominpappa at Sea is a loose reference to a novel written by what American author?
Context: Moominpappa at Sea (Swedish: "Pappan och havet", literally "The father and the sea") is the seventh book in the Moomin books by Finnish author Tove Jansson.  It is based primarily around the character of Moominpappa.  It was first published in 1965.  "Moominpappa at Sea" forms the basis of episodes 25 and 26 in the 1990 TV series.  The original title is a loose reference to Hemingway novel "The Old Man and the Sea", though this is not reflected in the translation. The Sun Also Rises is a 1926 novel written by American author Ernest Hemingway about a group of American and British expatriates who travel from Paris to the Festival of San Fermín in Pamplona to watch the running of the bulls and the bullfights.  An early and enduring modernist novel, it received mixed reviews upon publication.  Hemingway biographer Jeffrey Meyers writes that it is "recognized as Hemingway's greatest work", and Hemingway scholar Linda Wagner-Martin calls it his most important novel.  The novel was published in the United States in October 1926 by the publishing house Scribner's.  A year later, the London publishing house Jonathan Cape published the novel with the title of Fiesta.  Since then it has been continuously in print. Beyond the Golden Stair is a fantasy novel written by American writer Hannes Bok.  It was first published as the short story "The Blue Flamingo" in the January 1948 issue of the magazine "Startling Stories"; later the story was extensively revised and expanded by the author into novel form.  The novel version was first published in book form (posthumously) in paperback by Ballantine Books as the twenty-third volume of the Ballantine Adult Fantasy series in November, 1970.  The Ballantine edition includes an introduction by American author Lin Carter. The Infinite Sea is a young adult science fiction novel written by American author Rick Yancey.  It is the second novel in "The 5th Wave" series; it is the sequel to "The 5th Wave" and is followed by "The Last Star".  It was published on September 16, 2014. The Last Star is a young adult science fiction novel written by American author Rick Yancey.  It is the sequel to "The Infinite Sea" and the third and final book of the 5th Wave series.  It was published on May 24, 2016. S. is a 2013 novel written by Doug Dorst and conceived by J. J. Abrams.  The novel is unusual in its format, presented as a story within a story.  It is composed of the novel "Ship of Theseus" by a fictional author, and hand-written notes filling the book's margins as a dialogue between two college students hoping to uncover the author's mysterious identity and the novel's secret plus loose supplementary materials tucked in between pages. 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. The Old Man and the Sea is a short novel written by the American author Ernest Hemingway in 1951 in Bimini, Bahamas, and published in 1952.  It was the last major work of fiction by Hemingway that was published during his lifetime.  One of his most famous works, it tells the story of Santiago, an aging Cuban fisherman who struggles with a giant marlin far out in the Gulf Stream off the coast of Florida. Soldiers' Pay is the first novel published by the American author William Faulkner.  It was originally published by Boni & Liveright on February 25, 1926.  It is unclear if Soldiers' Pay is the first novel written by Faulkner.  It is however the first novel published by the author.  Faulkner was working on two manuscripts while finishing Soldiers' Pay. Moominvalley in November (Swedish: "Sent i november", 'Late in November'; Finnish: "Muumilaakson marraskuu") is the ninth and final book in the Moomin series by Finnish author Tove Jansson, and was first published in both her native Swedish and English in 1971.  Set contemporaneously with her previous novel "Moominpappa at Sea" (1965), it is the only installment in the series where the titular Moomin family are actually absent.  Instead it focuses on a set of other characters, including Snufkin, who come to live at Moominhouse during the onset of winter whilst its inhabitants are away, and the various interactions which they have with each other.
Answer: Ernest Hemingway