Question: I Am Legend was a horror novel that was the inspiration behind which George A. Romero film?
Context: 'Mary Bartlet Leader Born March 19, 1918, was an Author of two novels, "Triad: A Novel of the Supernatural" (1972) and "Salem’s Children" (1979).  "Triad" was the inspiration behind the popular Fleetwood Mac song "Rhiannon". Darkest Day of Horror is the fourth studio album by death metal band Mortician.  It takes its title from a slogan used to promote the George A. Romero film "Day of the Dead". František Vladislav Hek (April 11, 1769 in Dobruška, Bohemia – September 4, 1847 in Kyšperk) was a Czech writer, composer, and patriot active in the early phases of the Czech National Revival.  He was a major inspiration behind the fictionalized novel "F. L. Věk" (1906) by Alois Jirásek. How I Left The National Grid was a ‘hotly anticipated’ third novel by English author Guy Mankowski.  It provoked some speculation regarding the inspiration behind its main character, Robert Wardner. Keith Wayne (January 16, 1945 — September 9, 1995), born Ronald Keith Hartman, was an American actor known for his (only) role as Tom in the George A. Romero film "Night of the Living Dead" (1968). Night of the Living Dead is a 1968 American independent horror film, directed by George A. Romero, starring Duane Jones and Judith O'Dea.  It was completed on a $114,000 budget and premiered October 1, 1968.  The film became a financial success, grossing $12 million domestically and $18 million internationally.  It has been a cult classic ever since.  "Night of the Living Dead" was heavily criticized at its release for its explicit gore.  It eventually garnered critical acclaim and has been selected by the Library of Congress for preservation in the National Film Registry, as a film deemed "culturally, historically, or aesthetically significant". Gregory Nicotero (born March 15, 1963) is an American special make-up effects creator, and television producer and director.  His first major job in special effects makeup was on the George A. Romero film "Day of the Dead" (1985), under the tutelage of Romero and make-up effects veteran Tom Savini. Thomas Sheraton (1751 – 22 October 1806) was a furniture designer, one of the "big three" English furniture makers of the 18th century, along with Thomas Chippendale and George Hepplewhite.  Sheraton gave his name to a style of furniture characterized by a feminine refinement of late Georgian styles and became the most powerful source of inspiration behind the furniture of the late 18th century. I Am Legend is a 1954 science fiction horror novel by American writer Richard Matheson.  It was influential in the development of the zombie-vampire genre of fiction, and in popularizing the concept of a worldwide apocalypse due to disease.  The novel was a success and was adapted into the plot of films, namely: "The Last Man on Earth" (1964), "The Omega Man" (1971), "I Am Legend" (2007), and the direct-to-video production "I Am Omega" (2007).  The novel was also an inspiration behind "Night of the Living Dead" (1968). Judith O'Dea (born April 20, 1945) is an American actress.  She is best known for her role as Barbra in the 1968 George A. Romero film "Night of the Living Dead".
Answer: Night of the Living Dead