Question: Robert Mackenzie is an Australian supervising sound editor, he is known for which critically acclaimed biographical war-drama film, directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan?
Context: "Hacksaw Ridge" is a 2016 biographical war film, directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan.  Starring Andrew Garfield, the film focuses on the World War II experiences of Desmond Doss, an American pacificist combat medic who was a Seventh-day Adventist Christian, refusing to carry or use a firearm or weapons of any kind.  He became the first conscientious objector to be awarded the Medal of Honor, for service above and beyond the call of duty.  It was released in the United States on November 4, 2016.  The film was released to positive reviews, with a Rotten Tomatoes approval rating of 87%, based on 223 reviews, and an average rating of 7.2/10.  Metacritic lists a score of 71 out of 100, based on 47 reviews. Sylvain Bellemare (born February 20, 1968) is a Canadian sound editor and sound designer, best known internationally as the supervising sound editor of "Arrival" (2016), for which he won the BAFTA Award for Best Sound (shared with Claude La Haye and Bernard Gariépy Strobl) and the Academy Award for Best Sound Editing.  He is also known for "Soft Shell Man" (2001), "It's Not Me, I Swear!  " (2008), "Incendies" (2010), "Monsieur Lazhar" (2011), "Gabrielle" (2013) and "Endorphine" (2015).  He frequently works with Quebec filmmakers Philippe Falardeau or Denis Villeneuve. Jeremy Price is a sound designer and sound editor who has been prolific in television show production and also the film industry for over three decades.  Recently Price has been the supervising sound editor on such films as "10,000 B.C.", "Alien vs. Predator", and "Free Jimmy". Andy "Frank" Wright is an Australian supervising sound editor.  He is known for his work on critically acclaimed war-drama film "Hacksaw Ridge", for which he received two Academy Award nominations at the 89th Academy Awards, Best Sound Editing and Best Sound Mixing . Hacksaw Ridge is a 2016 biographical war drama film directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan, based on the 2004 documentary "The Conscientious Objector".  The film focuses on the World War II experiences of Desmond Doss, an American pacifist combat medic who was a Seventh-day Adventist Christian, refusing to carry or use a firearm or weapons of any kind.  Doss became the first conscientious objector to be awarded the Medal of Honor, for service above and beyond the call of duty during the Battle of Okinawa.  Andrew Garfield stars as Doss, with Sam Worthington, Luke Bracey, Teresa Palmer, Hugo Weaving, Rachel Griffiths, and Vince Vaughn in supporting roles. David Acord is an American sound editor and voice actor best known for his contribution as a supervising sound editor of the 2015 film "".  Acord is currently pending a nomination for the Academy Award for Academy Award for Best Sound Editing and British Academy Film Award for Best Sound for his work on "The Force Awakens", with fellow sound editor Matthew Wood.  He also provided the voice of several characters in the film, including the stormtrooper FN-2199 (often known as TR-8R).  Though the voice role is minimal, the character gained considerable attention on the Internet following the film's release.  Acord also had minor voice roles as an Imperial Male PA and two stormtroopers on episodes of "Star Wars Rebels". Wylie Stateman is an American supervising sound editor, sound designer, and post production media entrepreneur.  Stateman has worked on over 150 sound projects and has been nominated for multiple industry awards, including 8 Academy Awards, 6 BAFTA Awards and 17 Motion Picture Sound Editor Awards.  He also has received a Science Technology award from the Academy of Motion Picture Arts and Sciences. Peter Grace is an Australian production sound mixer.  He is best known for his work on critically acclaimed war-drama film "Hacksaw Ridge" (2016) for which he received the Academy Award for Best Sound Mixing at the 89th Academy Awards, sharing with Robert Mackenzie, Kevin O'Connell and Andy Wright. Robert Mackenzie is an Australian supervising sound editor.  He is best known for his work on "Animal Kingdom" (2010), "The Hunter" (2011), "Lore" (2012), "Felony" (2013), "The Grandmaster" (2013), "The Rover" (2014), "Deadline Gallipoli" (2015), "Partisan" (2015), "Lion", and critically acclaimed war-drama film "Hacksaw Ridge", for which he received two Academy Award nominations at the 89th Academy Awards, Best Sound Editing and Best Sound Mixing . Perry Robertson is an American sound editor, supervising sound editor, sound mixer, composer and musician, who is known for doing major motion pictures such as Black Hawk Down, Juno, The Bourne Identity, Up in the Air, John Rambo and Thank You For Smoking.
Answer: Hacksaw Ridge