Question: Which screenwriter is French, Roger Vadim or Robert Z. Leonard?

full_context: Document 1: Roger Vadim: Roger Vadim Plemiannikov (] ; 26 January 1928 – 11 February 2000) was a French screenwriter, film director and producer, as well as an author, artist and occasional actor. His best-known works are visually lavish films with erotic qualities, such as "And God Created Woman" (1956), "Barbarella" (1968), and "Pretty Maids All in a Row" (1971).
Document 2: Robert Z. Leonard: Robert Zigler Leonard (October 7, 1889 – August 27, 1968) was an American film director, actor, producer, and screenwriter.
Document 3: And God Created Woman (1988 film): And God Created Woman is a 1988 film directed by Roger Vadim and starring Rebecca De Mornay and Vincent Spano. It has the same title as the 1956 French film "Et Dieu… créa la femme" ("And God created woman") starring Brigitte Bardot, also directed by Vadim, but has a completely different story.
Document 4: Nathalie Vadim: Nathalie Vadim (born 1958) is the daughter of Roger Vadim and actress Annette Stroyberg. While her father was married to Oscar-winning actor Jane Fonda, Vadim's family would go on vacations that lasted several weeks or a month to Saint-Tropez or the Arcachon Bay and spend time in the mountains or on the water. In May 1987, Vadim worked as second assistant director on her father's remake film "And God Created Woman". Like her father, she has been involved in directing many films.
Document 5: Robert Wise: Robert Earl Wise (September 10, 1914 – September 14, 2005) was an American film director, producer and editor. He won Academy Awards for Best Director and Best Picture for both "West Side Story" (1961) and "The Sound of Music" (1965). He was also nominated for Best Film Editing for "Citizen Kane" (1941) and directed and produced "The Sand Pebbles" (1966), which was nominated for Best Picture.
Document 6: Bob Fosse: Robert Louis Fosse (June 23, 1927 – September 23, 1987) was an American dancer, musical theatre choreographer, director, screenwriter, film director and actor.
Document 7: Christian Vadim: Christian Vadim (born June 18, 1963) is a French actor. He is the son of actress Catherine Deneuve and director Roger Vadim.
Document 8: Robert Florey: Robert Florey (14 September 1900 – 16 May 1979) was a French-American director, screenwriter, film journalist, and occasional actor.
Document 9: Robert Altman: Robert Bernard Altman ( ; February 20, 1925 – November 20, 2006) was an American film director, screenwriter, and film producer. A five-time nominee of the Academy Award for Best Director and an enduring figure from the New Hollywood era, Altman was considered a "maverick" in making films with a highly naturalistic but stylized and satirical aesthetic, unlike most Hollywood films. He is consistently ranked as one of the greatest and most influential filmmakers in American cinema.
Document 10: And God Created Woman (1956 film): And God Created Woman (French: "Et Dieu… créa la femme" ) (1956) is a French drama film directed by Roger Vadim and starring Brigitte Bardot. Though not her first film, it is widely recognized as the vehicle that launched Bardot into the public spotlight and immediately created her "sex kitten" persona, making her an overnight sensation.
Document 11: Walerian Borowczyk: Walerian Borowczyk (21 October 1923 – 3 February 2006) was an internationally known Polish film director described by film critics as a 'genius who also happened to be a pornographer'. He directed 40 films between 1946 and 1988. Borowczyk settled in Paris in 1959. His career as a film director was mainly in France.
Document 12: The Night Heaven Fell: The Night Heaven Fell ("Les bijoutiers du claire de lune") is a Eastmancolor 1958 French-Italian film directed by Roger Vadim. Vadim had already acquired international fame with his daring debut "And God Created Woman" (1956). Like its predecessor, "The Night Heaven Fell" explored the exuberant sensuality of Brigitte Bardot, who was Vadim's wife at the time.
Document 13: Mervyn LeRoy: Mervyn LeRoy (October 15, 1900 – September 13, 1987) was an American film director, film producer and occasional actor.
Document 14: Walter Lang: Walter Lang (August 10, 1896 – February 7, 1972) was an American film director.
Document 15: Don Juan, or If Don Juan Were a Woman: Don Juan, or If Don Juan Were a Woman (French: Don Juan ou Si Don Juan était une femme... ) is a 1973 French-Italian drama film by Roger Vadim. It sees Vadim reunite with his leading lady and ex-wife Brigitte Bardot for their fifth film together. Bardot achieved international stardom and Vadim got his break when he directed her in the 1956 sensation, "And God Created Woman". It was her second to last film before retiring.
ground_truth: Roger Vadim Plemiannikov