Question: David Barsamian and Michael Arlen, have which mutual nationality?
Context: Shepherd Market is a small square in the Mayfair area of central London, developed in 1735-46 by Edward Shepherd on the open ground then used for the annual May fair from which Mayfair gets its name.  It is located between Piccadilly and Curzon Street and has a village-like atmosphere.  It has been associated with prostitutes since the Eighteenth century; in the 1980s, Jeffrey Archer met the prostitute Monica Coghlan in Shepherd Market.  In the 1920s it was a popular residential area for writers and artists, such as Anthony Powell, Michael Arlen and Sophie Fedorovitch. Class Warfare is a book of collected interviews with Noam Chomsky conducted by David Barsamian.  It was first published in the United States by Common Courage Press, and in the United Kingdom by Pluto Press, in 1996. Gay Stanhope Falcon (later known in film and radio as The Falcon) is a fictional character created in 1940 by Michael Arlen.  Falcon made his first appearance in Arlen's short story "Gay Falcon", which was first published in 1940 in "Town & Country" magazine.  Falcon is characterized as a freelance adventurer and troubleshooter - a man who makes his living "keeping his mouth shut and engaging in dangerous enterprises." Michael Arlen (November 16, 1895 in Ruse, Bulgaria – June 23, 1956), born Dikran Kouyoumdjian (Armenian: Տիգրան Գույումճյան ), was a British essayist, short story writer, novelist, playwright, and scriptwriter of an Armenian origin, who had his greatest successes in the 1920s while living and writing in England.  Arlen is most famous for his satirical romances set in English smart society, but he also wrote gothic horror and psychological thrillers, for instance "The Gentleman from America", which was filmed in 1956 as a television episode for Alfred Hitchcock's TV series "Alfred Hitchcock Presents".  Near the end of his life, Arlen mainly occupied himself with political writing.  Arlen's vivid but colloquial style "with unusual inversions and inflections with a heightened exotic pitch" came to be known as "Arlenesque". A Woman of Affairs is a 1928 Metro-Goldwyn-Mayer drama film directed by Clarence Brown and starring Greta Garbo, John Gilbert, Douglas Fairbanks Jr. and Lewis Stone.  The film, released with a synchronized score and sound effects, was based on a 1924 best-selling novel by Michael Arlen, "The Green Hat", which he adapted as a four-act stage play in 1925.  "The Green Hat" was considered so daring in the United States that the movie did not allow any associations with it and was renamed "A Woman of Affairs", with the characters also renamed to mollify the censors.  In particular the film script eliminated all references to heroin use, homosexuality and syphilis that were at the core of the tragedies involved. David Barsamian (born 1945) is an Armenian-American radio broadcaster, writer, and the founder and director of "Alternative Radio", a Boulder, Colorado-based syndicated weekly public affairs program heard on some 250 radio stations worldwide. Targeting Iran is a 2013 documentary film "designed to help Western audiences understand the complexities of historic and contemporary U.S./Iranian relations in an effort to derail potential military action."  Based on the 2007 book of the same name by David Barsamian, the film "seeks to elucidate the myths and popular misconceptions surrounding Iran's nuclear aspirations." The Prosperous Few and the Restless Many is a short book compiling three revised interviews of the United States academic Noam Chomsky by David Barsamian, originally conducted on December 16, 1992, January 14 and 21 1993. Imperial Ambitions: Conversations with Noam Chomsky on the Post-9/11 World is a 2005 Metropolitan Books American Empire Project publication of interviews with American linguist and political activist Noam Chomsky conducted and edited by award-winning journalist David Barsamian of Alternative Radio. Outcast Lady is a 1934 sound film directed by Robert Z. Leonard and produced and distributed by Metro Goldwyn Mayer.  The film stars Constance Bennett, Herbert Marshall and Mrs. Patrick Campbell.  It is a sound version of Michael Arlen's "The Green Hat", filmed in 1928 by MGM as "A Woman of Affairs" with Greta Garbo and John Gilbert.
Answer: Armenian