Question: Are Mervyn LeRoy and Nicholas Ray  both American film directors ?

full_context: Document 1: Ray Stark: Ray Stark (October 3, 1915 – January 17, 2004) was one of the most successful and prolific independent film producers in postwar Hollywood. Highly tenacious and intelligent, Stark’s background as a literary and theatrical agent groomed him to produce some of the most dynamic and profitable films of the 1960s, 1970s, 1980s, and 1990s, such as "The World of Suzie Wong" (1961), "West Side Story" (1961), "The Misfits" (1961), "Lolita" (1962), "The Night of The Iguana" (1964), "Reflections in a Golden Eye" (1967), "Funny Girl" (1968), "The Goodbye Girl" (1977), "The Toy" (1982), "Annie" (1982), and "Steel Magnolias" (1989).
Document 2: Albert Ray: Albert Ray (August 28, 1897 – February 5, 1944) was an American film director, actor and screenwriter. He directed 76 films between 1920 and 1939. He also appeared in 18 films between 1915 and 1922. He was born in New Rochelle, New York and died in Los Angeles, California.
Document 3: Warner LeRoy: Warner LeRoy (March 3, 1935 – February 22, 2001), was a New York businessman. LeRoy was the son of film producer-director Mervyn LeRoy and Mervyn's second wife, Doris Warner, and was the grandson of Harry Warner, one of the founders of Warner Bros. and a major contributor to the development of the film industry.
Document 4: Ray McCarey: Raymond Benedict "Ray" McCarey (September 6, 1904 – December 1, 1948) was an American film director.
Document 5: George Melford: George H. Melford (February 19, 1877 – April 25, 1961) was an American stage and film actor, director, producer, and screenwriter. Often taken for granted as a director today, the stalwart Melford's name by the 1920s was, like Cecil B. DeMille's, appearing in big bold letters above the title of his films.
Document 6: Nicholas Ray: Nicholas Ray (born Raymond Nicholas Kienzle Jr., August 7, 1911 – June 16, 1979) was an American film director best known for the movie "Rebel Without a Cause."
Document 7: Mervyn LeRoy: Mervyn LeRoy (October 15, 1900 – September 13, 1987) was an American film director, film producer and occasional actor.
Document 8: Maurice Elvey: Maurice Elvey (11 November 1887 – 28 August 1967) was the most prolific film director in British history. He directed nearly 200 films between 1913 and 1957. During the silent film era he directed as many as twenty films per year. He also produced more than fifty films - his own as well as films directed by others.
Document 9: Rick Ray: Rick Ray is an American filmmaker best known for his 2006 documentary film 10 Questions for the Dalai Lama which he wrote, filmed and directed. His documentary "Lynching Charlie Lynch", about the trials of former medical marijuana dispensary owner Charles C. Lynch, premiered at the 2011 San Luis Obispo International Film Festival on March 9.
Document 10: Nicolas Roeg: Nicolas Jack Roeg {'1': ", '2': ", '3': 'CBE BSC', '4': "} ( ; born 15 August 1928) is an English film director and cinematographer.
Document 11: Raymond Cauchetier: Raymond Cauchetier (born January 10, 1920) is a French photographer, known for his work as the set photographer from 1959 to 1968 on many of the seminal films of the French New Wave. His photographs are an important record of the New Wave directors at the beginning of their careers, and of their unconventional and groundbreaking production methods. A 2009 profile of Cauchetier in "Aperture" magazine declared that his photographs "are themselves central works of the New Wave."
Document 12: Robert Z. Leonard: Robert Zigler Leonard (October 7, 1889 – August 27, 1968) was an American film director, actor, producer, and screenwriter.
Document 13: Clarence Brown: Clarence Leon Brown (May 10, 1890 – August 17, 1987) was an American film director.
Document 14: Fred C. Newmeyer: Fred C. Newmeyer (August 9, 1888 – April 24, 1967) was an American actor, film director and film producer.
Document 15: Robert Florey: Robert Florey (14 September 1900 – 16 May 1979) was a French-American director, screenwriter, film journalist, and occasional actor.
ground_truth: yes