The Atlantis Conspiracy is a 2001 HBO/ZDF film that was written and directed by Dean Silvers.
 Filming took place in New York.
Dean Silvers is an American film producer, film director, screenwriter, entertainment lawyer and author.
 He has produced numerous films, including "Flirting with Disaster", "Manny & Lo", and "Spanking the Monkey", which won multiple awards, including the Audience Award at the Sundance Film Festival and two Independent Spirit Awards.
John G. Diefenbaker High School is a senior public high school located at 6620 4th Street N.W., Calgary, Alberta.
 The school is named after the 13th Prime Minister of Canada Rt.
 Hon. John G. Diefenbaker.
 The school is part of the Calgary Board of Education.
 The school graduates around 400 Grade 12 students every year, with a 91% graduation rate.
 There are currently 1405 students (as of September 2017).
John G. Metras {'1': ", '2': ", '3': ", '4': "} (born c. 1941) was a Canadian football player who played for the Hamilton Tiger-Cats.
 He won the Grey Cup with them in 1965.
 He previously played football at the University of Western Ontario, where his father Johnny Metras coached.
 John G. Metras graduated from Western Ontario in 1964 with a LL.B.
 degree and was called to the bar in 1966.
 His father was later inducted into the Canadian Football Hall of Fame in 1980 as a builder.
 John Metras, Jr. was inducted into the Western Ontario Wall of Champions in 2013.
 He currently works as a lawyer.
One Fall is a 2011 American fantasy drama film directed by Marcus Dean Fuller, and produced by Dean Silvers and Marlen Hecht.
 Filming took place in New York.
John G. Thomas is an American filmmaker.
 He has been in the film and television business for over 30 years.
Resident Alien is a 1990 documentary film directed, produced and edited by Jonathan Nossiter, and co-produced by Dean Silvers.
Unconquered is a 1989 television film written by Martin Chitwood (story) and Pat Conroy (teleplay).
 It was directed and produced by Dick Lowry, and co-produced by Martin Chitwood and Dean Silvers.
 The movie is based on the struggles of Richmond Flowers, Sr., the Alabama attorney general who opposed many of Governor George Wallace's segregationist policies in the 1960s, and his son, star athlete Richmond Flowers, Jr.
Beyond the Fire is a 2009 British romantic drama film, written and directed by Maeve Murphy and produced by Dean Silvers and Marlen Hecht.
 The film was first selected and screened at New British Cinema season at the ICA.
 Peter Bradshaw of The Guardian said "its unironic belief in the power of love is attractive".
The Connecticut gubernatorial election of 1994 included Republican John G. Rowland winning the open seat following the retirement of A Connecticut Party Governor Lowell Weicker.
 The election was a four-way race between A Connecticut Party Lieutenant Governor Eunice Groark, Republican U.S. Congressman John G. Rowland, Democrat state comptroller Bill Curry, and independent conservative talk show host Tom Scott.
 Rowland won the election with just 36% of the vote.

Question: what does Dean Silvers and John G. Thomas have in common?
Answer: film