Question: Which country the director of film Secrets Of A Door-To-Door Salesman is from?

Knowledge 1: Secrets of a Door-to-Door Salesman
Secrets of a Door-to-Door Salesman is a 1973 sex comedy film directed by Wolf Rilla.Also known as Naughty Wives, the film is about a young man who gets a job as a vacuum salesman and finds that he has to fight off advances from female customers. [SEP] Knowledge 2: Wolf Rilla
Wolf Peter Rilla (16 March 1920– 19 October 2005) was a film director and writer of German background, although he worked mainly in the United Kingdom.Rilla is known for directing "Village of the Damned" (1960).He wrote many books for students, such as "The Writer and the Screen: On Writing for Film and Television" and "The A to Z of Movie Making".
Knowledge 1: Wolf Rilla
Wolf Peter Rilla (16 March 1920– 19 October 2005) was a film director and writer of German background, although he worked mainly in the United Kingdom.Rilla is known for directing "Village of the Damned" (1960).He wrote many books for students, such as "The Writer and the Screen: On Writing for Film and Television" and "The A to Z of Movie Making". [SEP] Knowledge 2: Bill Porter (salesman)
About Bill Portercodice_1Bill Porter( September 9, 1932 – December 3, 2013) was an American salesman, who worked for Watkins Incorporated based out of Winona, Minnesota.Born with cerebral palsy, Porter's background and work was brought to the public's attention in 1995 when an Oregon- based newspaper published a series of feature stories about him.Porter was born in San Francisco, California, and at a young age moved to Portland, Oregon along with his mother.He was unable to gain employment due to his cerebral palsy, but refused to go on disability.Porter eventually convinced Watkins Incorporated to give him a door- to- door salesman job, selling its products on a seven- mile route in the Portland area.He eventually became Watkins' top seller, and worked for the company for over forty years.In 1995, the newspaper" The Oregonian" ran a feature story about Porter.The story of his optimistic determination made him the subject of media attention across the United States.He was featured in" Reader's Digest" and on ABC's" 20/20."The" 20 /20" broadcast received over 2000 phone calls and letters, which was the most ever for a" 20/ 20" story.Porter was the subject of a 2002 made- for- TV movie on TNT called" Door to Door", featuring William H. Macy, Kyra Sedgwick and Helen Mirren.In 2009 the Japanese TBS network aired a TV movie loosely based on Bill Porter, also called" Door to Door".It starred Ninomiya Kazunari and Rosa Kato as fictional versions of Porter and Brady.Porter died of an infection in Gresham, Oregon, on December 3, 2013, at the age of 81.
Knowledge 1: Our Willi Is the Best
Our Willi Is the Best  is a 1971 German comedy film directed by Werner Jacobs and starring Heinz Erhardt, Ruth Stephan and Rudolf Schündler.Now retired from his civil service job, Willi becomes a door-to-door salesman.Is the third part of the 'Willi' series of films. [SEP] Knowledge 2: Bill Porter (salesman)
About Bill Portercodice_1Bill Porter( September 9, 1932 – December 3, 2013) was an American salesman, who worked for Watkins Incorporated based out of Winona, Minnesota.Born with cerebral palsy, Porter's background and work was brought to the public's attention in 1995 when an Oregon- based newspaper published a series of feature stories about him.Porter was born in San Francisco, California, and at a young age moved to Portland, Oregon along with his mother.He was unable to gain employment due to his cerebral palsy, but refused to go on disability.Porter eventually convinced Watkins Incorporated to give him a door- to- door salesman job, selling its products on a seven- mile route in the Portland area.He eventually became Watkins' top seller, and worked for the company for over forty years.In 1995, the newspaper" The Oregonian" ran a feature story about Porter.The story of his optimistic determination made him the subject of media attention across the United States.He was featured in" Reader's Digest" and on ABC's" 20/20."The" 20 /20" broadcast received over 2000 phone calls and letters, which was the most ever for a" 20/ 20" story.Porter was the subject of a 2002 made- for- TV movie on TNT called" Door to Door", featuring William H. Macy, Kyra Sedgwick and Helen Mirren.In 2009 the Japanese TBS network aired a TV movie loosely based on Bill Porter, also called" Door to Door".It starred Ninomiya Kazunari and Rosa Kato as fictional versions of Porter and Brady.Porter died of an infection in Gresham, Oregon, on December 3, 2013, at the age of 81.

Answer: United Kingdom