Question: What profession do both Phil Alden Robinson and David Nixon share?

full_context: Document 1: David (1951 film): David is a short film made in 1951 about the Welsh miner and poet David Rees Griffiths. It was directed by Paul Dickson, who also wrote the script, shot by Ronald Anscombe, produced by James Carr, and distributed by Regent Films. Leading Welsh composer Grace Williams wrote the score for the film. The film is 38 minutes long and was given a U certificate. It was the Welsh contribution to the Festival of Britain film festival.
Document 2: Field of Dreams: Field of Dreams is a 1989 American fantasy-drama sports film directed by Phil Alden Robinson, who also wrote the screenplay, adapting W. P. Kinsella's novel "Shoeless Joe". It stars Kevin Costner, Amy Madigan, James Earl Jones, Ray Liotta and Burt Lancaster in his final role. It was nominated for three Academy Awards, including for Best Original Score, Best Adapted Screenplay and Best Picture.
Document 3: Phil Alden Robinson: Phil Alden Robinson (born March 1, 1950) is an American film director and screenwriter whose films include "Field of Dreams", "Sneakers", and "The Sum of All Fears".
Document 4: Sneakers (1992 film): Sneakers is a 1992 American comedy caper film directed by Phil Alden Robinson, written by Robinson, Walter Parkes, and Lawrence Lasker, and starring Robert Redford, Dan Aykroyd, Ben Kingsley, Mary McDonnell, River Phoenix, Sidney Poitier and David Strathairn.
Document 5: David Nixon (American football): David Nixon (born March 16, 1985 in College Station, Texas) is a former American football linebacker. He was undrafted in the 2009 NFL Draft to the Oakland Raiders. He played college football at Brigham Young University.
Document 6: Nixon (film): Nixon is a 1995 American biographical film directed by Oliver Stone for Cinergi Pictures that tells the story of the political and personal life of former U.S. President Richard Nixon, played by Anthony Hopkins.
Document 7: David Nixon (director): David Nixon is an American film director and film producer. He is the director and producer of "Letters to God" and a co-producer and assistant director of "Fireproof" and "Facing the Giants".
Document 8: The Sum of All Fears (film): The Sum of All Fears is a 2002 American spy thriller film directed by Phil Alden Robinson, based on Tom Clancy's novel of the same name. The film, which is set in the "Jack Ryan" film series, is a reboot taking place in 2002. Jack Ryan is portrayed as a younger character by Ben Affleck, in comparison to "The Hunt for Red October" starring Alec Baldwin, along with the film's subsequent sequels, "Patriot Games" and "Clear and Present Danger", both of which starred Harrison Ford.
Document 9: John Lee Hancock: John Lee Hancock, Jr. (born December 15, 1956) is an American screenwriter, film director, and producer. He is best known for directing the sports drama films "The Rookie" (2002) and "The Blind Side" (2009), and the historical drama films "Saving Mr. Banks" (2013) and "The Founder" (2016).
Document 10: Robert Zemeckis: Robert Lee Zemeckis (born May 14, 1952) is an American filmmaker and screenwriter frequently credited as an innovator in visual effects. Credited as "one of the greatest visual storytellers in filmmaking", he first came to public attention in the 1980s as the director of "Romancing the Stone" (1984) and the science-fiction comedy "Back to the Future" film trilogy, as well as the live-action/animated comedy "Who Framed Roger Rabbit" (1988). In the 1990s he diversified into more dramatic fare, including 1994's "Forrest Gump", for which he won an Academy Award for Best Director. The film itself won Best Picture. The movies he has directed have ranged across a wide variety of genres, for both adults and families.
Document 11: Ron Shelton: Ronald Wayne "Ron" Shelton (born September 15, 1945) is an American Oscar-nominated film director and screenwriter and former minor league baseball infielder. Shelton is known for the many films he has made about sports.
Document 12: Nick Nanton: Nick Nanton is an award winning director, agent, and author. He is a 5 time Emmy Award winner for directing and producing the short films Jacob's Turn, Esperanza, Mi Casa Hogar, and Visioneer. Nanton is a 13 time Telly Award winner and has co-authored several best-selling books. He is the founder and CEO of The Dicks and Nanton Celebrity Branding Agency.
Document 13: David Fincher: David Andrew Leo Fincher (born August 28, 1962) is an American director and producer, notably for films, television series and music videos. He was nominated for the Academy Award for Best Director for "The Curious Case of Benjamin Button" (2008) and "The Social Network" (2010). For the latter, he won the Golden Globe Award for Best Director and the BAFTA Award for Best Direction.
Document 14: Neil Nixon: Neil Nixon is an author, journalist and academic from Workington, England. Nixon’s published works include titles on the paranormal, popular music, football and two novels published under the name of Stanley Manly. In 1999, he founded the United Kingdom’s first full-time higher education course in Professional Writing. Nixon’s scripts include material for television and radio. His radio play "Mr. Lennon" was nominated for a Sony Radio Academy Award for Best Single Drama. He currently resides in Bearsted, Kent with his wife Jane.
Document 15: David Nixon (magician): David Nixon (29 December 1919 – 1 December 1978) was an English magician and television personality. At the height of his career, Nixon was the best-known magician in the UK.
ground_truth: film director