Question: What profession is held in common with Donald Sawyer and Roberto Gavaldón?

Context paragraphs:
Las Tres perfectas casadas: Las tres perfectas casadas ("The Three Perfect Wives") is a 1953 Mexican comedy film directed by Roberto Gavaldón, based on the eponymous play by Alejandro Casona.  It was entered into the 1953 Cannes Film Festival.

Nana (1944 film): Nana is a 1944 Mexican film by Celestino Gorostiza and Roberto Gavaldón.  The film is an adaptation of Émile Zola's novel "Nana", and is the last film of the Mexican star Lupe Vélez.

The Boy and the Fog: The Boy and the Fog (Spanish: El Niño y la niebla ) is a 1953 Mexican drama film directed by Roberto Gavaldón.  It was entered into the 1954 Cannes Film Festival.

Ariel Award for Best Director: The Ariel Award for Best Director (Spanish: Premio Ariel a la Mejor Dirección) (officially known as the Ariel Award for Best Directing) is an award presented by the Academia Mexicana de Artes y Ciencias Cinematográficas (AMACC) in Mexico.  It is given in honor of a film director who has exhibited outstanding directing while working in the Mexican film industry.  In 1947, the 1st and 2nd Ariel Awards were held, with Roberto Gavaldón and Emilio "El Indio" Fernández winning for the films "La Barraca" and "Enamorada", respectively.  With the exception of the years 1959 to 1971, when the Ariel Awards were suspended, the award has been given annually.  Nominees and winners are determined by a committee formed every year consisting of academy members (active and honorary), previous winners and individuals with at least two Ariel nominations; the committee members submit their votes through the official AMACC website.

Roberto Gavaldón: Roberto Gavaldón (June 7, 1909 in Jiménez, Chihuahua – September 4, 1986 in Mexico City) was a Mexican film director.

Donald Sawyer: Donald Sawyer is a film director, currently residing in Westfield, New Jersey.  He is best known for directing the controversial 2009 documentary, 'The Eyes Have Frozen Open: The Fall of the Kroner'.  The film chronicling the financial crisis in Iceland met harsh reviews at the 2010 Boulder International Film Festival.  Critics have cited its depiction of certain British banks as being succubi on the economy of Iceland as "over-the-top and defamatory."

En La Palma de Tu Mano: En la Palma de Tu Mano ("In the Palm of Your Hand") is a 1951 Mexican crime drama film directed by Roberto Gavaldón.  The film received eleven nominations and won eight Ariel Awards in 1952, including Best Picture and Best Director.

Flor Silvestre filmography: Mexican singer Flor Silvestre, one of the most iconic performers of Mexican and Hispanic music, is also a prolific and versatile actress of Mexican cinema's "golden age".  In her 40-year acting career, she played leading and supporting roles in more than 70 feature films of various genres.  She was one of the most sought-after actresses of the late 1950s, and, as a result, 30 of her films were released in only four years (1957-1960).  She worked with film directors Zacarías Gómez Urquiza, Vicente Oroná, Miguel M. Delgado, Jaime Salvador, Chano Urueta, Roberto Gavaldón, Gilberto Martínez Solares, Miguel Contreras Torres, Rogelio A. González, Ismael Rodríguez, Gilberto Gazcón, Benito Alazraki, Miguel Zacarías, René Cardona, and Mario Hernández.

The Private Life of Mark Antony and Cleopatra: The Private Life of Mark Antony and Cleopatra (Spanish:La vida íntima de Marco Antonio y Cleopatra) is a 1947 Mexican historical comedy film directed by Roberto Gavaldón and starring Luis Sandrini, María Antonieta Pons and Víctor Junco.

The Hidden One: The Hidden One (Spanish: "La Escondida" ) is a 1956 Mexican drama film directed by Roberto Gavaldón.  It was entered into the 1956 Cannes Film Festival.

Supporting paragraphs: Roberto Gavaldón Donald Sawyer
Answer: film director