Question: Who directed the 2017 American erotic romantic drama based on E. L. James's novel that is the sequel to a 2015 American erotic romantic drama film directed by Sam Taylor-Johnson about a college graduate who begins a sadomasochistic relationship with young business magnate ? 

full_context: Document 1: Fifty Shades (film series): Fifty Shades is an American film series that consists of three erotic romantic drama films, based on the " Fifty Shades" trilogy by English author E. L. James. It is distributed by Universal Studios and stars Dakota Johnson and Jamie Dornan as the lead roles Anastasia Steele and Christian Grey, respectively. Sam Taylor-Johnson directed the first film and initially she was slated to be the director of the sequels as well, however subsequently the second and third films were directed by James Foley.
Document 2: Furious 7: Furious 7 (alternatively known as Fast & Furious 7 and Fast 7) is a 2015 American action film directed by James Wan and written by Chris Morgan. It is the seventh installment in "The Fast and the Furious" franchise. The film stars Vin Diesel, Paul Walker, Dwayne Johnson, Michelle Rodriguez, Tyrese Gibson, Chris "Ludacris" Bridges, Jordana Brewster, Djimon Hounsou, Kurt Russell, and Jason Statham. "Furious 7" follows Dominic Toretto (Diesel), Brian O'Conner (Walker), and the rest of their team, who have returned to the United States to live normal lives after securing amnesty for their past crimes in "Fast & Furious 6" (2013), until Deckard Shaw (Statham), a rogue special forces assassin seeking to avenge his comatose younger brother, puts the team in danger once again.
Document 3: E. L. James: Erika Mitchell (born 7 March 1963), known by her pen name E. L. James, is an English author. She wrote the bestselling erotic romance trilogy "Fifty Shades of Grey", "Fifty Shades Darker", and "Fifty Shades Freed", along with the companion novel ""; and under "Snowqueen's Icedragon" the Twilight fan fiction "Master of the Universe" that was the basis for the Fifty Shades trilogy.
Document 4: Fifty Shades Darker: Fifty Shades Darker is a 2012 erotic romance novel by British author E. L. James. It is the second instalment in the "Fifty Shades" trilogy that traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey. The first and third volumes, "Fifty Shades of Grey" and "Fifty Shades Freed", were published in 2011 and 2012. The novel is published by Vintage Books and reached No. 1 on the "USA Today" best seller list.
Document 5: Grey: Fifty Shades of Grey as Told by Christian: Grey: Fifty Shades of Grey As Told by Christian, also referred to as Grey, is a 2015 erotic romance by British author E. L. James. It is the fourth installment in the "Fifty Shades" series, which had its start as fanfiction.
Document 6: Fifty Shades of Grey: Fifty Shades of Grey is a 2011 erotic romance novel by British author E. L. James. It is the first instalment in the "Fifty Shades" trilogy that traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey. It is notable for its explicitly erotic scenes featuring elements of sexual practices involving bondage/discipline, dominance/submission, and sadism/masochism (BDSM). Originally self-published as an ebook and a print-on-demand, publishing rights were acquired by Vintage Books in March 2012.
Document 7: Magic Mike XXL: Magic Mike XXL is a 2015 American comedy-drama film directed by Gregory Jacobs, written by Reid Carolin and starring Channing Tatum, Matt Bomer, Kevin Nash and Joe Manganiello. A sequel to 2012's "Magic Mike", the film was released on July 1, 2015, received mixed to positive reviews from critics and grossed $122 million.
Document 8: Fifty Shades Darker (film): Fifty Shades Darker is a 2017 American erotic romantic drama film directed by James Foley and written by Niall Leonard, based on E. L. James's novel of the same name. The second film in the "Fifty Shades" film series, it is the sequel to the 2015 film "Fifty Shades of Grey". The film stars Dakota Johnson and Jamie Dornan as Anastasia Steele and Christian Grey, respectively, with Eric Johnson, Eloise Mumford, Bella Heathcote, Rita Ora, Luke Grimes, Victor Rasuk, Kim Basinger and Marcia Gay Harden in supporting roles.
Document 9: Rough Night: Rough Night (international title: Girls' Night Out) is a 2017 American black comedy film directed by Lucia Aniello (in her feature debut) and written by Aniello and Paul W. Downs. It stars Scarlett Johansson, Zoë Kravitz, Kate McKinnon, Jillian Bell, and Ilana Glazer, and follows a bachelorette party that goes wrong after a male stripper dies.
Document 10: Fifty Shades of Grey (film): Fifty Shades of Grey is a 2015 American erotic romantic drama film directed by Sam Taylor-Johnson, with a screenplay by Kelly Marcel. The film is based on the eponymous 2011 novel by British author E. L. James and stars Dakota Johnson as Anastasia Steele, a college graduate who begins a sadomasochistic relationship with young business magnate Christian Grey, played by Jamie Dornan.
Document 11: Bella Heathcote: Isabella Heathcote (born 27 May 1987) is an Australian actress. She began her acting career in 2008. The following year, she had a recurring role as Amanda Fowler on the television soap opera "Neighbours". Heathcote played Victoria Winters in Tim Burton's film adaptation of "Dark Shadows", Jane Bennett in "Pride and Prejudice and Zombies", and Gigi in "The Neon Demon". She plays Nazi national Nicole Dörmer in the dystopian historical thriller series "The Man in the High Castle" and appeared as Leila Williams, a deranged ex-lover of Christian Grey, in the erotic romance film "Fifty Shades Darker".
Document 12: Fifty Shades Freed (film): Fifty Shades Freed is an upcoming American erotic romantic drama film directed by James Foley and written by Niall Leonard, based on the novel of same name by E. L. James. It is the final film in the "Fifty Shades" trilogy, and a sequel to "Fifty Shades of Grey" (2015) and "Fifty Shades Darker" (2017). The film stars Dakota Johnson and Jamie Dornan as Anastasia Steele and Christian Grey, respectively.
Document 13: The Twilight Saga: Breaking Dawn – Part 2: The Twilight Saga: Breaking Dawn – Part 2 (commonly referred to as Breaking Dawn: Part 2) is a 2012 American romantic drama fantasy film directed by Bill Condon and based on the novel "Breaking Dawn" by Stephenie Meyer. The second part of a two-part film forms the fifth and final installment in "The Twilight Saga" film series, and is the conclusion of the 2011 film "". All three main cast members, Kristen Stewart, Robert Pattinson and Taylor Lautner, reprise their roles, with Mackenzie Foy portraying Renesmee Cullen. Alongside Pattinson, Lautner, Stewart and Foy, the film also stars an ensemble cast such as Billy Burke, Peter Facinelli, Elizabeth Reaser, Kellan Lutz, Nikki Reed, Jackson Rathbone, Ashley Greene, Michael Sheen and Dakota Fanning.
Document 14: Fifty Shades (novel series): The "Fifty Shades" trilogy is a series of erotic novels by E. L. James. The trilogy consists of "Fifty Shades of Grey" (2011), "Fifty Shades Darker" and "Fifty Shades Freed" (2012). The trilogy traces the deepening relationship between a college graduate, Anastasia Steele, and a young business magnate, Christian Grey.
Document 15: Fifty Shades Freed: Fifty Shades Freed is the third and final installment of the erotic romance "Fifty Shades Trilogy" by British author E. L. James. After accepting entrepreneur CEO Christian Grey's proposal in "Fifty Shades Darker", Anastasia Steele must adjust not only to married life but to her new husband's wealthy lifestyle and controlling nature. The paperback edition was first published in April 2012.
ground_truth: James Foley