Question: John M. Stahl and Patricio Guzmán, share which film occupation?
Context: Patricio "Pato" Guzmán (1933–1991), a native of Chile, worked in the United States as an art director, production designer, and producer of television and film.  He worked on such notable shows as "The Jack Benny Program", "I Love Lucy", "The Lucy Show", "That Girl".  He also served as a production designer for the "" pilot "" (uncredited) and in that capacity worked directly with art director Matt Jeffries and creator-producer Gene Roddenberry on the design of the original USS Enterprise NCC-1701 exterior and bridge.  In the 1980s, Guzman worked with director Paul Mazursky on the films "Tempest", "Moscow on the Hudson", "Down and Out in Beverly Hills", and "". Wives of Men is a 1918 American silent drama film directed by John M. Stahl and starring Florence Reed.  Stahl also wrote the screenplay with movie being produced by Grace Davison, who has a role in the film. Salvador Allende is a 2004 documentary film about Chilean president Salvador Allende, from his election campaign to the "coup d'état" which ended his life.  It was directed by Patricio Guzmán and screened out of competition at the 2004 Cannes Film Festival. The Compass Rose (Spanish: "La rosa de los vientos" ) is a 1983 Spanish drama film directed by Patricio Guzmán.  It was entered into the 13th Moscow International Film Festival. John Malcolm Stahl (January 21, 1886 – January 12, 1950) was an American film director and producer. The Pearl Button (Spanish: El botón de nácar ) is a 2015 Chilean documentary film directed by Patricio Guzmán.  It was screened in the main competition section of the 65th Berlin International Film Festival where it won the Silver Bear for Best Script.  It won the Lumières Award for Best Documentary at the 21st Lumières Awards.  The filmmaker has described the work as part of a triptych with "Nostalgia for the Light" and potentially a third film focusing on the Andes. Nostalgia for the Light (Spanish: "Nostalgia de la Luz" ) is a documentary released in 2010 by Patricio Guzmán to address the lasting impacts of Augusto Pinochet’s dictatorship.  Guzmán focuses on the similarities between astronomers researching humanity’s past, in an astronomical sense, and the struggle of many Chilean women who still search, after decades, for the remnants of their relatives executed during the dictatorship.  Patricio Guzmán narrates the documentary himself and the documentary includes interviews and commentary from those affected and from astronomers and archeologists. Patricio Guzmán Lozanes (born August 11, 1941) is a Chilean documentary film director.  He is internationally renowned for films such as "The Battle of Chile" and "Salvador Allende". The Woman Under Oath is a 1919 American silent mystery film directed by John M. Stahl and starring stage star Florence Reed.  As with the previous Stahl/Reed film, "Her Code of Honor", it was produced by Tribune Productions and released by United Picture Theatres of America Incorporated. The Battle of Chile is a documentary film directed by the Chilean Patricio Guzman, in three parts: "The Insurrection of the Bourgeoisie" (1975), "The Coup d'état" (1976), "Popular Power" (1979).  It is a chronicle of the political tension in Chile in 1973 and of the violent counter revolution against the democratically elected government of Salvador Allende.  It won the Grand Prix in 1975 and 1976 at the Grenoble International Film Festival.  In 1996, "Chile, Obstinate Memory" was released and followed Guzmán back to Chile as he screened the 3-part documentary to Chileans who had never seen it before.
Answer: film director