Question: Are Alexander Hall and L. Ron Hubbard both American?

full_context: Document 1: Written works of L. Ron Hubbard: Lafayette Ronald Hubbard (March 13, 1911 – January 24, 1986), better known as L. Ron Hubbard, was an American pulp fiction author. He wrote in a wide variety of genres, including science fiction, fantasy, adventure fiction, aviation, travel, mystery, western and romance. He is perhaps best known for his self-help book, the #1 New York Times bestseller Dianetics: The Modern Science of Mental Health (first published in 1950), and as the founder of the Church of Scientology.
Document 2: C. K. Alexander: C. K. Alexander (May 4, 1923 – September 2, 1980) was an Egyptian actor, director, composer, and playwright. Of Lebanese and Syrian descent, he was born as Charles Khalil Saad in Cairo, Egypt, on May 4, 1923. C.K. attended Cairo University from 1938 to 1939 and the American University in Cairo from 1940 to 1941. He changed his name to Charles Khalil Alexander after moving to the United States in 1942.
Document 3: Scientology: Scientology is a body of religious beliefs and practices developed in 1954 by American author L. Ron Hubbard (1911–86). Hubbard initially developed a program of ideas called Dianetics, which was distributed through the Dianetics Foundation. The foundation soon entered bankruptcy, and Hubbard lost the rights to his seminal publication "" in 1952. He then recharacterized the subject as a religion and renamed it Scientology, retaining the terminology, doctrines, the E-meter, and the practice of auditing. Within a year, he regained the rights to Dianetics and retained both subjects under the umbrella of the Church of Scientology.
Document 4: L. Ron Hubbard, Messiah or Madman?: L. Ron Hubbard, Messiah or Madman?, is a posthumous biography of Scientology founder L. Ron Hubbard written by Bent Corydon, which makes extensive use of interviews he conducted with Hubbard's son Ronald DeWolf. Though originally published in 1987 by Lyle Stuart Inc., the book was re-issued in a paperback edition on July 25, 1992 and a hardcover edition in October 1995, both by publisher Barricade Books. The 1995 edition also featured Brian Ambry as principal researcher. The first edition of the book listed DeWolf as coauthor.
Document 5: Hall Bartlett: Hall Bartlett (November 27, 1922 – September 7, 1993) was an American film producer, director, and screenwriter.
Document 6: Alexander Hall: Alexander Hall (January 11, 1894, Boston, Massachusetts – July 30, 1968, San Francisco, California) was an American film director and theatre actor.
Document 7: Stanley Hall (dancer): Stanley Hall (1917-1994) was a British-born ballet dancer with an eclectic career that ranged from the Vic-Wells Ballet (later the Royal Ballet) to the Ballets de Paris, from major Hollywood movies to Broadway, and from TV specials to celebrity nightclub acts. Hall moved to Austin, Texas in the late 1960s and founded Austin Ballet Theatre, a ballet company that enjoyed great popularity for its monthly performances at the Armadillo World Headquarters from 1972-1980. In addition to his performance legacy, he was also a teacher and mentor to many aspiring dancers in Austin until his death in 1994.
Document 8: Alex Segal: Alex Segal (July 1, 1915 – August 22, 1977) was an American television director, television producer and film director.
Document 9: Scientology in the United Kingdom: Scientology in the United Kingdom is practised mainly within the Church of Scientology and its related groups which go under names including "Hubbard Academy of Personal Independence" and "Dianetics and Scientology Life Improvement Centre". The national headquarters, and former global headquarters, is Saint Hill Manor at East Grinstead, which for seven years was the home of L. Ron Hubbard, the pulp fiction author who created Scientology. Church-connected groups promoting aspects of L. Ron Hubbard's teaching, including Narconon and CCHR, have also been active in the UK, in some cases with charitable status. There have also been groups practising Scientology independently of the Church.
Document 10: L. Ron Hubbard: Lafayette Ronald Hubbard (March 13, 1911 – January 24, 1986), better known as L. Ron Hubbard ( ) and often referred to by his initials, LRH, was an American author and the founder of the Church of Scientology. After establishing a career as a writer, becoming best known for his science fiction and fantasy stories, he developed a system called Dianetics which was first expounded in book form in May 1950. He subsequently developed his ideas into a wide-ranging set of doctrines and practices as part of a new religious movement that he called Scientology. His writings became the guiding texts for the Church of Scientology and a number of affiliated organizations that address such diverse topics as business administration, literacy and drug rehabilitation. The Church's dissemination of these materials led to Hubbard being listed by the "Guinness Book of World Records" as the most translated and published author in the world. The Guinness World Record for the most audio books published for one author is also held by Hubbard. In 2014, Hubbard was cited by "Smithsonian" magazine as one of the 100 most significant Americans of all time, as one of the eleven religious figures on that list.
Document 11: History of Dianetics: The history of Dianetics possibly begins in the 1920s. Its originator L. Ron Hubbard claimed that his ideas of Dianetics originated in the 1920s and 1930s. By his own account, he spent a great deal of time in the Oak Knoll Naval Hospital's library, where he would have encountered the work of Freud and other psychoanalysts. In April 1950, Hubbard and several others established the Hubbard Dianetic Research Foundation in Elizabeth, New Jersey to coordinate work related for the forthcoming publication. Hubbard first introduced Dianetics to the public in the article "" published in the May 1950 issue of the magazine "Astounding Science Fiction". Hubbard wrote "" at that time, allegedly completing the 180,000-word book in six weeks.
Document 12: L. Ron Hubbard: Lafayette Ronald Hubbard (March 13, 1911 – January 24, 1986), better known as L. Ron Hubbard ( ) and often referred to by his initials, LRH, was an American author and the founder of the Church of Scientology. After establishing a career as a writer, becoming best known for his science fiction and fantasy stories, he developed a system called Dianetics which was first expounded in book form in May 1950. He subsequently developed his ideas into a wide-ranging set of doctrines and practices as part of a new religious movement that he called Scientology. His writings became the guiding texts for the Church of Scientology and a number of affiliated organizations that address such diverse topics as business administration, literacy and drug rehabilitation. The Church's dissemination of these materials led to Hubbard being listed by the "Guinness Book of World Records" as the most translated and published author in the world. The Guinness World Record for the most audio books published for one author is also held by Hubbard. In 2014, Hubbard was cited by "Smithsonian" magazine as one of the 100 most significant Americans of all time, as one of the eleven religious figures on that list.
Document 13: George Alexander (actor): Sir George Alexander (19 June 185815 March 1918), born George Alexander Gibb Samson, was an English stage actor, theatre producer and theatre manager.
Document 14: L. Ron Hubbard House: The L. Ron Hubbard House, also known as the Original Founding Church of Scientology, is a writer's house museum and former Scientology church located at 1812 19th Street NW in the Dupont Circle neighborhood of Washington, D.C., United States. The home served as the residence of Scientology founder L. Ron Hubbard from 1955 until 1959, during which time he incorporated the Founding Church of Scientology and performed the first Scientology wedding. The building is a contributing property to the Dupont Circle Historic District, a neighborhood listed on the National Register of Historic Places.
Document 15: Charles D. Hall: Charles D. Hall ( April 20, 1888 – April 8, 1970) was a British-American art director and production designer. He is perhaps best remembered for his tenure at Universal Pictures, where he began his career during the silent era. He was art director for many of Universal's most famous productions of the 1920s and '30's: "The Phantom of the Opera" (1925), "All Quiet on the Western Front" (1930), the original Bela Lugosi "Dracula" (1931), the original "Magnificent Obsession" (1935), and the 1936 "My Man Godfrey" among them, as well as eleven films directed by James Whale, including the original Boris Karloff "Frankenstein" (1931), "The Invisible Man" (1933), "Bride of Frankenstein" (1935), and the 1936 film version of "Show Boat". Hall also worked on the 1929 part-talkie film version of "Show Boat", directed by Harry A. Pollard.
ground_truth: yes