Question: The films Frankenstein and Bride of Frankenstein are based on the novel by which author?

full_context: Document 1: Bride of the Monster: Bride of the Monster is a 1955 American science fiction horror film directed, written, and produced by Edward D. Wood, Jr., and starring Bela Lugosi, along with Tor Johnson, Tony McCoy, and Loretta King.
Document 2: Frankenstein (2007 film): Frankenstein is a 2007 British television film produced by Impossible Pictures for ITV. It was written and directed by Jed Mercurio, adapted from Mary Shelley's original novel to a present-day setting. Dr. Victoria Frankenstein, a female geneticist, accidentally creates a monster while growing her son's clone from stem cells as an organ donor in an effort to prevent his imminent death. The film was broadcast on 24 October 2007, to an average audience of 3.6 million.
Document 3: Mary Shelley's Frankenstein (film): Mary Shelley's Frankenstein is a 1994 horror drama film directed by Kenneth Branagh and starring Robert De Niro, Kenneth Branagh, Tom Hulce, Helena Bonham Carter, Ian Holm, John Cleese, and Aidan Quinn. The picture was produced on a budget of $45 million and is considered the most faithful film adaptation of Mary Shelley's novel "Frankenstein; or, The Modern Prometheus", despite several differences and additions in plot from the novel.
Document 4: Boris Karloff filmography: This is the filmography of Boris Karloff. Born as William Henry Pratt, he joined a touring company and adopted the stage name Boris Karloff. During these early stages of his career he was mostly left in obscurity. By 1919, Karloff found regular work as an extra at Universal Studios. Karloff's first significant hit film was in Howard Hawks's "The Criminal Code" (1931). While shooting "Graft", director James Whale convinced Karloff to star as a character in one of his most popular roles as Frankenstein's monster in "Frankenstein" which led to him becoming an overnight superstar. After "Frankenstein" and starring in several high-profile films such as "Bride of Frankenstein" and "Scarface", Karloff spent the remainder of the 1930s continuing to work at an incredible pace, but progressively more into less financially successful films. Karloff starred in a few acclaimed Val Lewton produced horror films of the 1940s and by the mid-1950s, he was a familiar presence on television hosting his own series including "Thriller" and "The Veil" and guest starring on such variety programs as "The Donald O'Connor Show".
Document 5: Frankenstein's monster: Frankenstein's monster, sometimes known as Frankenstein, is a fictional character who first appeared in Mary Shelley's 1818 novel "Frankenstein; or, The Modern Prometheus". Shelley's title thus compares the monster's creator, Victor Frankenstein, to the mythological character Prometheus, who fashioned humans out of clay and gave them fire. Although nameless in Shelley's novel, the creature is often referred to by his creator's surname, "Frankenstein".
Document 6: Bride of Frankenstein (character): The Bride of Frankenstein is a fictional character briefly mentioned in the novel, "Frankenstein", and officially introduced in the film, "Bride of Frankenstein.
Document 7: Frankenstein (1931 film): Frankenstein is a 1931 American pre-Code horror monster film from Universal Pictures directed by James Whale and adapted from the play by Peggy Webling (which in turn is based on the novel of the same name by Mary Shelley), about a scientist and his assistant who dig up corpses to build a man animated by electricity, but his assistant accidentally gives the creature an abnormal, murderer's brain. The resultant monster is portrayed by Boris Karloff in the film.
Document 8: The Ghost of Frankenstein: The Ghost of Frankenstein is a 1942 American horror film, and the fourth in a series of films produced by Universal Studios based upon characters in Mary Shelley's novel "Frankenstein". The film features Lon Chaney, Jr. as the Monster, taking over from Boris Karloff, who played the role in the first three films of the series, and Béla Lugosi in his second and final appearance as the demented Ygor. The supporting cast features Lionel Atwill, Cedric Hardwicke, Ralph Bellamy and Evelyn Ankers.
Document 9: Bride of Frankenstein: Bride of Frankenstein (advertised as The Bride of Frankenstein) is a 1935 American science-fiction horror film, the first sequel to Universal Pictures' 1931 hit "Frankenstein". It is considered one of the few sequels to a great film that is even better than the original film on which it is based. As with the first film, "Bride of Frankenstein" was directed by James Whale and stars Boris Karloff as The Monster. The sequel features Elsa Lanchester in the dual role of Mary Shelley and the Monster's mate at the end of the film. Colin Clive reprises his role as Henry Frankenstein, and Ernest Thesiger plays the role of Doctor Septimus Pretorius.
Document 10: Kyoufu Densetsu Kaiki! Frankenstein: Kyōfu Densetsu Kaiki! Frankenstein (恐怖伝説 怪奇！フランケンシュタイン ) , is a 1981 Japanese animated television film based on Mary Shelley's novel and the Marvel comic book Monster of Frankenstein. In this 98-minute violent, adult-oriented film, the creature was portrayed as a misunderstood monster, who only wanted to be loved. The film was dubbed and released in the U.S in 1984. The dubbed version never had a title but was advertised as both "Monster of Frankenstein" and "Frankenstein Legend of Terror".
Document 11: The Curse of Frankenstein: The Curse of Frankenstein is a 1957 British horror film by Hammer Film Productions, loosely based on the novel "Frankenstein" (1818) by Mary Shelley. It was Hammer's first colour horror film, and the first of their Frankenstein series. Its worldwide success led to several sequels, and the studio's new versions of "Dracula" (1958) and "The Mummy" (1959) and established "Hammer Horror" as a distinctive brand of Gothic cinema. The film was directed by Terence Fisher and stars Peter Cushing as Victor Frankenstein, Hazel Court as Elizabeth, and Christopher Lee as the creature.
Document 12: Father of Frankenstein: Father of Frankenstein is a 1995 novel by Christopher Bram which speculates on the last days of the life of film director James Whale. Whale directed such groundbreaking works as the 1931 "Frankenstein" and 1933's "The Invisible Man" and was a pioneer in the horror film genre.
Document 13: The Monster of Frankenstein (film): The Monster of Frankenstein (Italian:Il mostro di Frankenstein) is a 1920 Italian silent horror film, directed by Eugenio Testa, starring Luciano Albertini, Aldo Mezzanotte and Umberto Guarracino, and is an adaptation of Mary Shelley's novel "Frankenstein".
Document 14: Frankenstein (2015 film): Frankenstein (stylised as FRANKƐN5TƐ1N) is a 2015 updated adaptation of Mary Shelley's "Frankenstein", directed by Bernard Rose.
Document 15: Boris Karloff: William Henry Pratt (23 November 1887 – 2 February 1969), better known by his stage name Boris Karloff, was an English actor who was primarily known for his typecast roles in horror films that depicted the characters Frankenstein and the Mummy. He portrayed Frankenstein's monster in "Frankenstein" (1931), "Bride of Frankenstein" (1935), and "Son of Frankenstein" (1939), which resulted in his immense popularity. He also appeared as Imhotep in "The Mummy" (1932).
ground_truth: Mary Shelley