Question: Sara Bennett did visual effects for which movie directed by Alex Garland?
Context: Christopher Townsend is a visual effects supervisor.  He has worked in the visual effects industry for over 20 years.  For over a decade, he was an artist and supervisor at Industrial Light and Magic, and in 2007 became a freelance visual effects supervisor.  He worked on "Journey to the Center of the Earth", the first ever stereoscopic motion picture shot and released digitally, "Wolverine", "Ninja Assassin", "" and "".  He was nominated for a BAFTA and an Academy Award for Best Visual Effects for his work on "Iron Man 3", oversaw nearly 3000 shots on "" and was the overall supervisor for "Guardians of the Galaxy Vol.  2".  In 2015 he was given an Honorary Doctor of Arts degree by his alma mater, Coventry University. Ex Machina (stylized as ex_machina or EX_MACHINA) is a 2015 independent science fiction psychological thriller film written and directed by Alex Garland (in his directorial debut) and stars Domhnall Gleeson, Oscar Isaac and Alicia Vikander.  The film follows a programmer who is invited by his CEO to administer the Turing test to an intelligent humanoid robot. Carey Villegas is a visual effects artist who was nominated at the 83rd Academy Awards in the category of Best Visual Effects, for the film "Alice in Wonderland".  His nomination was shared with Sean Phillips, Ken Ralston and David Schaub.  Also for Alice in Wonderland, Carey won the 2010 Golden Satellite Award for Best Visual Effects and was nominated for the British Academy Award (BAFTA), Critics Choice Award, Saturn Award, and the Visual Effects Society Award (VES) for "Outstanding Visual Effects in a Visual Effects Driven Motion Picture". Sara Bennett is a British visual effects artist.  Best known for her works in "Harry Potter and the Chamber of Secrets" (2002), "Harry Potter and the Prisoner of Azkaban" (2004), "Harry Potter and the Goblet of Fire" (2005), "Doctor Who" (2005), "Merlin" (2008), "Jonathan Strange & Mr Norrell" (2009), "Skellig" (2009), "The Martian" (2015) and "Ex Machina" (2015). Sunshine is a 2007 British-American science fiction thriller film directed by Danny Boyle.  The film was adapted from a screenplay written by Alex Garland about the crew of a spacecraft on a dangerous mission to the Sun.  In 2057, with the Earth in peril from the dying Sun, the crew is sent on a mission to reignite the star with a nuclear bomb that has a mass equivalent to Manhattan Island.  The script was based on a scientific back-story that took the characters on a psychological journey.  The director cast a group of international actors for the film, and had the actors live together and learn about topics related to their roles, as a form of method acting.  To have the actors realistically react to visual effects that would be implemented in post-production, the filmmakers constructed live sets to serve as cues.  The ensemble cast features Cillian Murphy, Chris Evans, Rose Byrne, Michelle Yeoh, Cliff Curtis, Troy Garity, Hiroyuki Sanada, Benedict Wong, and Chipo Chung. Paul J. Franklin is an English visual effects supervisor who has worked with visual effects since the 1990s.  He is known for his long-running working relationship with director Christopher Nolan which dates back to "Batman Begins" (2005).  Franklin won the Academy Award for Best Visual Effects and the BAFTA Award for Best Special Visual Effects for "Inception" (2010), and won a second Academy Award for Best Visual Effects for "Interstellar" (2014).  He shared the wins with Andrew Lockley, Peter Bebb, and Chris Corbould.  Franklin has also been nominated for an Academy Award for "The Dark Knight" (2008).  He was nominated for BAFTA Awards for "Batman Begins", "The Dark Knight" (2008), and "The Dark Knight Rises" (2012). John Nelson (born July 21, 1953 in Detroit, Michigan) is a Visual effects supervisor and a 1976 graduate of the University of Michigan.  He won the Academy Award for Best Visual Effects at the 73rd Academy Awards, for his work on the film "Gladiator".  He was also nominated for the Academy Award for Best Visual Effects for supervising the visual effects in the films "I, Robot" and "Iron Man". Animal Logic is an Australian animation and visual effects studio based at Fox Studios in Sydney and Warner Bros.  Studios in Los Angeles.  Established in 1991, Animal Logic has produced visual effects and animation for feature films such as "The Great Gatsby", "Walking with Dinosaurs 3D", "The Matrix", "300", the Academy Award-winning "Happy Feet", "Moulin Rouge! " and "".  Animal Logic also produced the animation on "The Lego Movie", directed by Phil Lord and Chris Miller and released in February 2014.  Animal Logic was recognised for its work as lead visual effects vendor on Baz Luhrmann’s "The Great Gatsby", when it won Outstanding Achievement in Visual Effects at the 3rd AACTA Awards ceremony. The AACTA Award for Best Visual Effects or Animation (previously Best Visual Effects) is an award presented by the Australian Academy of Cinema and Television Arts (AACTA) for achievements in visual effects in film, television, documentary and short film.  The award was first presented by the Australian Film Institute (AFI)at the Australian Film Institute Awards (known commonly as the AFI Awards) from 2006-2010, prior to the establishment of the Academy.  In 2014 the award for Best Visual Effects was renamed Best Visual Effects or Animation.  Additionally, this category is now open to any film, television or documentary production, regardless of geography, which has had 100% of its visual effects and animation made in Australia. A Paying Ghost (Marathi :" अ पेईंग घोस्ट") is a Marathi language film.  This is a fiction story based on a famous novel authored by V.P. Kale.  The movie directed by Sushrut Bhagwat.  Screenplay & dialogue has been written by Sanjay Mone.  The movie is produced by Jayant Lade, Lade Bros Films Pvt. Ltd.  This was the first Marathi film with 70 minutes of visual effects.  Producer of the film doesn't want to sacrifice with the visual effects hence he chose Om kamal who did , Captain America, Independence day as a VFX artist.  It was a box office failure
Answer: Ex Machina