Question: Stand By Me, famously starring River Phoenix, was a film adapted from a short story called The Body, by which famous author?

Context paragraphs:
The Body (King novella): The Body is a novella by American writer Stephen King, originally published in his 1982 collection "Different Seasons" and adapted into the 1986 film "Stand by Me".  Some changes were made to the plot of the film, including changing the setting year from 1960 to 1959 and the location of Castle Rock from Maine to Oregon.

The Little Match Girl: "The Little Match Girl" (Danish: "Den Lille Pige med Svovlstikkerne" , meaning "The little girl with the matchsticks") is a short story by Danish poet and author Hans Christian Andersen.  The story, about a dying child's dreams and hope, was first published in 1845.  It has been adapted to various media, including an animated short film, a television musical, and an animated virtual reality story called "Allumette".

Dark Blood: Dark Blood is a 2012 American-Dutch thriller film directed by George Sluizer, written by Jim Barton, and starring River Phoenix, Judy Davis, and Jonathan Pryce.  The film was not completed due to the death of Phoenix shortly before the end of the project (it would also be the final film made by Sluizer) and remained unfinished for 19 years.  It was the last movie to feature River Phoenix and the only one where Phoenix played the villain.

Running on Empty (1988 film): Running on Empty is a 1988 drama film directed by Sidney Lumet and starring River Phoenix, Judd Hirsch, Christine Lahti, and Martha Plimpton.  It was produced by Lorimar Television.  It is the story of a counterculture couple on the run from the FBI, and how one of their sons starts to break out of this fugitive lifestyle.

Little Nikita: Little Nikita is a 1988 American cult drama film directed by Richard Benjamin and starring River Phoenix and Sidney Poitier.  The film marks the first collaboration between Phoenix and Poitier (the second being "Sneakers" in 1992).

Lassie: Lassie is a fictional character created by Eric Knight; she is a female Rough Collie dog, and is featured in a short story that was later expanded to a full-length novel called "Lassie Come-Home".  Knight's portrayal of Lassie bears some features in common with another fictional female collie of the same name, and is featured in the British writer Elizabeth Gaskell's 1859 short story called "The Half Brothers."  In "The Half Brothers", Lassie is loved only by her young master and guides the adults back to where two boys are lost in a snowstorm.

My Own Private Idaho: My Own Private Idaho is a 1991 American independent adventure drama film written and directed by Gus Van Sant, loosely based on Shakespeare's "Henry IV, Part 1", "Henry IV, Part 2", and "Henry V", and starring River Phoenix and Keanu Reeves.  The story follows two friends, Mike and Scott, as they embark on a journey of personal discovery that takes them to Mike's hometown in Idaho and then to Italy in search of Mike's mother.

Stand by Me (film): Stand by Me is a 1986 American coming-of-age drama film directed by Rob Reiner, and starring Wil Wheaton, River Phoenix, Corey Feldman, and Jerry O'Connell.  The film, whose plot is based on Stephen King's novella "The Body" (1982) and title is derived from Ben E. King's eponymous song, which plays over the ending credits, tells the story of four boys in a small town in Oregon who go on a hike to find the dead body of a missing child.

A Night in the Life of Jimmy Reardon: A Night in the Life of Jimmy Reardon, also known as Aren't You Even Gonna Kiss Me Goodbye? , is a 1988 American coming of age drama film written and directed by William Richert and starring River Phoenix, Ann Magnuson, Meredith Salenger, Matthew Perry, Ione Skye, and Louanne.  It is based upon the novel "Aren't You Even Gonna Kiss Me Goodbye?" , also by William Richert.  The story centers on a high school graduate who must decide if he wants to go to business school at the request of his father, or go his own way and find a full-time job, while also deciding on who he wants to be in life and if he should leave his house.

Landscape After the Battle: Landscape After the Battle (Polish: Krajobraz po bitwie ) is a 1970 Polish drama film directed by Andrzej Wajda and starring Daniel Olbrychski; telling a story of a Nazi German concentration camp survivor soon after liberation, residing in a DP camp somewhere in Germany.  It is based on the writings of Holocaust survivor and Polish author Tadeusz Borowski.  In most part, the plot revolves around the events depicted in Borowski's short story called "Bitwa pod Grunwaldem" ("The Battle of Grunwald") from his collection "This Way for the Gas, Ladies and Gentlemen".  The film was entered into the 1970 Cannes Film Festival.

Supporting paragraphs: The Body (King novella) Stand by Me (film)
Answer: Stephen King