Question: What nationality are film directors David Nixon and Arthur Berthelet?

Context paragraphs:
Penny of Top Hill Trail: Penny of Top Hill Trail is a silent 1921 Western comedy-drama film based on the 1919 novel by Belle Kanaris Maniates.  It was directed by Arthur Berthelet and stars Bessie Love.

Arthur Berthelet: Arthur Berthelet (1879–1949) was an American film director who went from directing stage plays (several on Broadway) to directing silent movies.

Sherlock Holmes (1916 film): Sherlock Holmes is a 1916 American silent film starring William Gillette as Arthur Conan Doyle's Sherlock Holmes.  The film, which was directed by Arthur Berthelet, was produced by Essanay Studios in Chicago.  It was adapted from the 1899 stage play of the same name, which was based on the stories, "A Scandal in Bohemia," "The Final Problem," and "A Study in Scarlet" by Arthur Conan Doyle.

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.

Bangladesh Film Directors Association: Bangladesh Film Directors Association is the pan-national trade body of film directors in Bangladesh.  The Bangladesh Film Directors Association’s General Secretary is Badiul Alam Khokon.  Mushfiqur Rahman Gulzar is the president of Bangladesh Film Directors Association.

Cinema of the United Kingdom: The United Kingdom has had a significant film industry for over a century.  While film production reached an all-time high in 1936, the "golden age" of British cinema is usually thought to have occurred in the 1940s, during which the directors David Lean, Michael Powell, (with Emeric Pressburger) and Carol Reed produced their most highly acclaimed work.  Many British actors have achieved international fame and critical success, including Maggie Smith, Michael Caine, Sean Connery and Kate Winslet.  Some of the films with the largest ever box office returns have been made in the United Kingdom, including the second and third highest-grossing film series ("Harry Potter" and "James Bond").

John Dunning (film producer): John Dunning (April 27, 1927–September 19, 2011) was a pioneering Canadian film producer from Montreal who co-founded the Canadian film production company Cinépix and produced early works by notable Canadian directors David Cronenberg and Ivan Reitman.  Dunning launched Cinépix with partner André Link in Montreal in the early 1960s.  Their biggest commercial success—and the first Canadian box office hit—came with Reitman’s "Meatballs" (1979).

Men Who Have Made Love to Me: Men Who Have Made Love to Me is a 1918 American silent biographical film starring Mary MacLane, based on her book "I, Mary MacLane" (1917), and directed by Arthur Berthelet.

Fashion House: Fashion House is an American nighttime Soap opera that aired at 9:00PM Eastern/8:00PM Central Monday through Saturday on MyNetworkTV stations.  The series premiered on September 5, 2006 and concluded on December 5, 2006.  It was produced by Twentieth Television with directors David Hogan, Alex Hennech, Jim Slocum and Jeremy Stanford.

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".

Supporting paragraphs: David Nixon (director) Arthur Berthelet
Answer: American