Question: Who directed the film which won the BAFTA Award for Best Editing in 2006?

full_context: Document 1: LeRoy W. Homer Jr. Foundation: The LeRoy W. Homer Jr. Foundation is a national 501(c)(3) non-profit organization founded in memory of First Officer LeRoy W. Homer Jr.. LeRoy Homer was the co-pilot of United Airlines Flight #93, which crashed in Shanksville, Pennsylvania on September 11, 2001. The flight recordings revealed that Dahl and Homer survived the initial attack and were still alive after the hijackers took over the plane. It is believed that Dahl and Homer took actions to interfere with the hijackers, including disengaging the autopilot just before the hijackers took over in order to prevent them from setting the plane's target coordinates for Washington, D.C., and switching the output of the pilots' microphones from the cabin address speakers to the radio transmitter so that Jarrah's attempts to communicate with the passengers would instead be heard by air traffic controllers. After learning of the earlier crashes at the thumb|right|World Trade CenterMelodie and the Pentagon, the crew and passengers attempted to foil the hijacking and reclaim the aircraft. Meanwhile, the hijackers were not able to disengage the autopilot. Dahl continued to struggle in the cockpit, refusing to allow a hijacker to deactivate the autopilot so he could fly the plane manually. The hijackers were heard to say "Inform them, and tell him to talk to the pilot; bring back the pilot", possibly referring toLaurel Homer (CVR transcripts). However, the uprising of crew and passengers took place and during the attempt the plane crashed into a field in Stonycreek Township, Pennsylvania2002. The crash killed everyone on board. Before the plane went down, she says, he had regained consciousness and was part of the final attack that forced the plane to abort its intended target, which was somewhere in Washington, D.C., and crash.ref>]]
Document 2: Richard Pearson (film editor): Richard Pearson (born 1961) is an American film editor who is mainly associated with action films. Pearson, with Clare Douglas and Christopher Rouse, received the BAFTA Award for Best Editing for the film "United 93" (2006).
Document 3: Paul Greengrass: Paul Greengrass (born 13 August 1955) is an English film director, film producer, screenwriter and former journalist. He specialises in dramatisations of real-life events and is known for his signature use of hand-held cameras. His early film "Bloody Sunday" won the Golden Bear at 52nd Berlin International Film Festival. Other films he has directed include three in the "Bourne" action/thriller series: "The Bourne Supremacy" (2004), "The Bourne Ultimatum" (2007), and "Jason Bourne" (2016); "United 93" (2006), for which he won the BAFTA Award for Best Director, and received an Academy Award for Best Director nomination, "Green Zone" (2010) and "Captain Phillips" (2013). In 2004 he co-wrote and produced the film "Omagh", which won British Academy Television Award.
Document 4: Glenn Farr: Glenn Farr is a film and TV editor who was one of the five film editors to win the Academy Award for Best Film Editing during the 56th Academy Awards for the film "The Right Stuff". He shared his win with Lisa Fruchtman, Tom Rolf, Stephen A. Rotter and Douglas Stewart.
Document 5: Zero Dark Thirty: Zero Dark Thirty is a 2012 American political action-thriller film directed by Kathryn Bigelow and written by Mark Boal. Billed as "the greatest manhunt in history," the film dramatizes the nearly decade-long international manhunt for al Qaeda leader Osama bin Laden after the September 11 attacks in the United States. This search eventually leads to the discovery of his compound in Pakistan and the military raid that resulted in bin Laden's death on May 2, 2011.
Document 6: Richard A. Harris: Richard A. Harris is an American film editor with a career spanning nearly forty years. He graduated from the School of Cinematic Arts of the University of Southern California in 1956.
Document 7: United 93 (film): United 93 is a 2006 biographical drama-thriller film written, co-produced and directed by Paul Greengrass, that chronicles events aboard United Airlines Flight 93, which was hijacked during the September 11 attacks of 2001. The film attempts to recount with as much veracity as possible (there is a disclaimer that some imagination had to be used) and in real time (from the flight's takeoff) what has come to be known in the United States as a critical moment. According to the filmmakers, the film was made with the cooperation of all of the passengers' families. The majority of the film is presented in real time.
Document 8: Tariq Anwar (film editor): Tariq Anwar is an Indian-born film editor whose credits include "Center Stage", "The Good Shepherd", "Sylvia", "Oppenheimer", and "American Beauty", for which he was nominated for an Academy Award and won two BAFTA Awards. He has also been nominated for Academy Award in 2011 for editing "The King's Speech". He is now based in the United States and the United Kingdom. With Shirley Hills, he is the father of actress Gabrielle Anwar.
Document 9: Fahrenheit 9/11 controversies: The content of the 2004 documentary film "Fahrenheit 9/11" generated controversy before, during, and after its release a few months prior to the 2004 U.S. presidential election. The film, directed by Michael Moore, criticizes the Bush administration's attempt to pursue Osama bin Laden in the aftermath of the September 11, 2001, attacks, as well as the Iraq War. Although "Fahrenheit 9/11" was generally praised by film critics and won various awards, several other commentators criticized the film for factual and contextual inaccuracies.
Document 10: Khalid Abdalla: Khalid Abdalla (Arabic: خالد عبد الله‎ ‎ , "Khālid ‘Abd Allāh"; born 26 October 1980) is a British Egyptian actor and activist. He came to international prominence after starring in the 2006 Academy Award-nominated and BAFTA-winning film, "United 93". Written and directed by Paul Greengrass, it chronicles events aboard United Airlines Flight 93, which was hijacked as part of the September 11 attacks. Abdalla played Ziad Jarrah, the pilot and leader of the four hijackers on board the flight. He starred as Amir in "The Kite Runner" and acted with Matt Damon in "Green Zone", his second film with director Paul Greengrass. Abdalla appears as himself in Jehane Noujaim's documentary on the ongoing Egyptian revolution, "The Square", which won the Audience Award at Sundance Festival in 2013.
Document 11: 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 12: Sully (film): Sully (also known as Sully: Miracle on the Hudson) is a 2016 American biographical drama film directed by Clint Eastwood and written by Todd Komarnicki, based on the autobiography "" by Chesley Sullenberger and Jeffrey Zaslow. The film stars Tom Hanks as Sullenberger, with Aaron Eckhart, Laura Linney, Anna Gunn, Autumn Reeser, Holt McCallany, Jamey Sheridan, and Jerry Ferrara in supporting roles. The film follows Sullenberger's January 2009 emergency landing of US Airways Flight 1549 on the Hudson River, in which all 155 passengers and crew survived with only minor injuries, and the subsequent publicity and investigation.
Document 13: John Gilbert (film editor): John Gilbert is a film editor who works primarily in New Zealand. Gilbert has edited 17 feature films as well as television shows and short films. He won the Academy Award for Best Film Editing and the BAFTA Award for Best Editing, among several honors, for Mel Gibson's war drama "Hacksaw Ridge" (2016). Gilbert had earlier received various accolades for his work on Peter Jackson's "" (2001), including the Satellite Award for Best Editing and nominations for an Academy Award, a BAFTA Award and an ACE Eddie Award.
Document 14: Kirk Baxter: Kirk Baxter (born in 1972) is an Australian film editor. He has worked with director David Fincher and editor Angus Wall several times, winning Academy Awards for "The Social Network" and "The Girl with the Dragon Tattoo".
Document 15: Perry Robertson: 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.
ground_truth: Paul Greengrass