The Assassin (Italian: "L'assassino" ) is a 1961 Italian crime film directed by Elio Petri.
 It is the feature film debut of Petri.
 It was entered into the 11th Berlin International Film Festival.
The 25th Cannes Film Festival was held from 4 to 19 May 1972.
 The Palme d'Or went to the "La classe operaia va in paradiso" by Elio Petri and "Il Caso Mattei" by Francesco Rosi.
We Still Kill the Old Way (Italian: A ciascuno il suo ) is a 1967 Italian crime film directed by Elio Petri.
 It was entered into the 1967 Cannes Film Festival where it won the award for Best Screenplay.
 It is based on the novel "To Each His Own" by Leonardo Sciascia.
Luigi Kuveiller (3 October 1927 - 10 January 2013) was an Italian cinematographer, best known for his collaboration with Elio Petri.
The 10th Victim (Italian: "La decima vittima" ) is a 1965 Italian-French science fiction film directed by Elio Petri and starring Marcello Mastroianni and Ursula Andress, and featuring Elsa Martinelli in a supporting role.
 The picture is based on Robert Sheckley's 1953 short story "Seventh Victim".
 Sheckley later published a novelization of the film in 1966, and two sequels ("Victim Prime" and "Hunter/Victim") in 1987 and 1988, respectively.
 In the United States, the film was theatrically released by Joseph E. Levine's Embassy Pictures.
Elio Petri (29 January 1929 – 10 November 1982) was an Italian political filmmaker.
Good News (Italian: "Buone notizie" ) is a 1979 Italian satirical comedy film written and directed by Elio Petri and starring Giancarlo Giannini.
 It is the last film of Petri.
Todo modo is a 1976 Italian drama film directed by Elio Petri.
 It is based on a novel of the same name by Leonardo Sciascia.
Property Is No Longer a Theft (Italian: La proprietà non è più un furto ) is a 1973 Italian comedy film directed by Elio Petri.
 It was entered into the 23rd Berlin International Film Festival.
Uli Edel (born 11 April 1947) is a German film and television director, best known for his work on films such as "Last Exit to Brooklyn" and "Body of Evidence."

Question: Are both Elio Petri and Uli Edel filmmakers?
Answer: yes