Question: Which company, owned by Nandamuri Kalyan Ram, provided that special effects for a 2015 French-British crime thriller film written by Brian Helgeland?

full_context: Document 1: Rana Daggubati: Ramanaidu Daggubati (born 14 December 1984), also known by his stage name Rana Daggubati or simply, Rana, is an Indian actor, producer, visual effects co-ordinator and photographer. He is known for his works in Telugu cinema, Tamil cinema and Hindi cinema. As a Visual Effects producer, Rana won the State Nandi Award for Best Special Effects in 2006 for the Telugu film "Sainikudu" starring Mahesh Babu. In 2006, he received the National Film Award for co-producing "Bommalata – A Bellyful of Dreams."
Document 2: Kray twins: Twin brothers Ronald "Ronnie" Kray (24 October 193317 March 1995) and Reginald "Reggie" Kray (24 October 19331 October 2000) were English gangsters who were the foremost perpetrators of organised crime in the East End of London during the 1950s and 1960s. With their gang, the Firm, the Krays were involved in armed robberies, arson, protection rackets, assaults and the murders of Jack "the Hat" McVitie and George Cornell.
Document 3: Y. Kasi Viswanath: Yanamadala Kasi Viswanath is an Indian actor, director from Andhra Pradesh. He worked as an assistant director, associate director and co-director for 25 films. Later he directed the film Nuvvu Leka Nenu Lenu starring Tarun Kumar, Aarthi Agarwal. Nandamuri Kalyan Ram's Debut film Toli Choopulone is his second film as a director before turning into an actor. He made his debut as an actor in the film Nachavule directed by Ravi Babu. He played the father of hero in that film. Later he acted in more than 90 films.
Document 4: Ram Charan: Ram Charan is an Indian film actor, dancer, producer, businessman and entrepreneur, who works in Telugu cinema. He won two Nandi Awards, two South Filmfare awards, two CineMAA Awards, and two Santosham Best Actor Awards. Charan is one of the highest paid actors in Tollywood.
Document 5: The 15:17 to Paris: The 15:17 to Paris is an upcoming American biographical drama film directed by Clint Eastwood and written by Dorothy Blyskal, based on the autobiography "The 15:17 to Paris: The True Story of a Terrorist, a Train, and Three American Heroes" by Jeffrey E. Stern, Spencer Stone, Anthony Sadler and Alek Skarlatos, about the 2015 Thalys train attack; it will star Stone, Sadler, and Skarlatos as themselves.
Document 6: S. V. S. Rama Rao: Seelamsetty Venkata Sri Rama Rao (1913–1970) was an art director, motion picture director and producer of Telugu films. He was one of the debutant technicians in the film industry, right from the era of non-talkies to the talkies of the late 1970s. He was the only art director who had designed the art work for the movie on the Lord Venkateswara by the title "Sri Venkateswara Mahatyam" (directed by P. Pullaiah under the banner Padmasri Pictures in 1959-1960). He belongs to the Kapu-Telaga Community of Andhra Pradesh. His children are son late Arvind Prakash, Mechanical Engineer and two daughters Devi Chandra and late Sathyavathi. His Grandchildren of Late. Arvind Prakash are Kumar, Kishore and Prasad. And Grandchildren of Devi Chandra are Poonam Kiran and Thrivikram Suman. Whereas since his last daughter late Satyavathi has expired in month of July dated 9the of 2000.
Document 7: Nandamuri Kalyan Ram: Nandamuri Kalyan Ram is an Indian actor and film producer who works in Telugu cinema. He was born to actor and politician Nandamuri Harikrishna and Lakshmi. He is one of the grandsons of N. T. Rama Rao, who was an actor and a statesman. Actor Jr.NTR is his Brother. He is the owner of the production company named after his grandfather late NTR, called N.T.R. Arts. He had played a lead role in several movies like "Athanokkade", "Hare Ram" and "Pataas". He also owns a VFX company named "Advitha Creative Studios" which provided special effects for movies like "Legend", "Nannaku Prematho", "Krishnashtami" etc.
Document 8: Helter Skelter (book): Helter Skelter (1974) is a true crime book by Vincent Bugliosi and Curt Gentry. Bugliosi had served as the prosecutor in the 1970 trial of Charles Manson. The book presents his firsthand account of the cases of Manson, Susan Atkins, Patricia Krenwinkel, and other members of the self-described Manson Family. It is the best-selling true crime book in history.
Document 9: The Legend of Barney Thomson: The Legend of Barney Thomson, known in the United States as Barney Thomson, is a 2015 British comedy thriller based on the novel "The Long Midnight of Barney Thomson" by Douglas Lindsay. It is the directorial debut of Robert Carlyle, who also stars in the film, alongside Emma Thompson, Ray Winstone, Ashley Jensen and Brian Pettifer. It was previewed at the 2015 Edinburgh International Film Festival in June 2015 before its release on 24 July 2015.
Document 10: Flic Story: Flic Story French: "Il était une fois un flic" is a French crime thriller released on October 1, 1975, based on the autobiography of the same name written by French police detective Roger Borniche. Both film and book portray Borniche's nine-year pursuit of French gangster and murderer Emile Buisson, who was executed on February 28, 1956. Directed by Jacques Deray, the film stars Alain Delon and Jean-Louis Trintignant as Borniche and Buisson respectively, supported by Claudine Auger and André Pousse.
Document 11: Legend (2015 film): Legend is a 2015 French-British crime thriller film written and directed by Brian Helgeland. It is adapted from John Pearson's book "The Profession of Violence: The Rise and Fall of the Kray Twins", which deals with the rise and fall of the Kray twins; the relationship that bound them together, and charts their gruesome career to their downfall and imprisonment for life in 1969.
Document 12: The Fall of the Krays: The Fall of the Krays is a 2016 low-budget British crime film directed by Zackary Adler and written by Ken and Sebastian Brown based on the true story of Ronnie and Reggie Kray. The film serves as the sequel to "The Rise of the Krays".
Document 13: Legend (1985 film): Legend is a 1985 American-British dark fantasy adventure film directed by Ridley Scott and starring Tom Cruise, Mia Sara, Tim Curry, David Bennent, Alice Playten, Billy Barty, Cork Hubbert, and Annabelle Lanyon. It is a dark fairy tale and has been described as a return to more original, sometimes disturbing, fables, from the oral tradition of ancient times before reading and writing were widespread.
Document 14: Hare Ram: Hare Ram is a 2008 Telugu movie directed by Harshavardhan", and produced by Kalyan Ram, under N.T.R. Arts. Kalyan Ram, Priyamani and Sindhu Tolani play the lead roles while Ali, Brahmanandam, Kota Srinivasa Rao and Raghu Babu play supporting roles. Mickey J Meyer was the music director, "C. Ram Prasad" handled cinematography, and was edited by "Gowtham Raju". The film was released on 18 July 2008. This movie is the next best hit for Kalyan Ram after "Athanokkade" which was a blockbuster. This film was dubbed into Hindi as Julmo Ka Tandav
Document 15: N. T. R. Arts: Nandamuri Kalyan Ram established the production house with the name of his grand father, legendary actor and former Chief Minister, Nandamuri Taraka Rama Rao. The production house has introduced some good directors such as Surender Reddy and Anil Ravipudi to Tollywood.
ground_truth: Advitha Creative Studios