Question: Are Richard Wallace and Samira Makhmalbaf both screenwriters?

Context paragraphs:
Riccarton, Ayrshire: Riccarton is a village and parish in East Ayrshire, Scotland.  It lies across the River Irvine from Kilmarnock, this river forming the boundary between Riccarton and Kilmarnock parishes, and also between the historical districts of Kyle and Cunningham.  The name is a corruption of 'Richard's town', traditionally said to refer to Richard Wallace, the uncle of Sir William Wallace.  The parish also contains the village of Hurlford.

Wallace fountain: Wallace fountains are public drinking fountains designed by Charles-Auguste Lebourg that appear in the form of small cast-iron sculptures scattered throughout the city of Paris, France, mainly along the most-frequented sidewalks.  They are named after the Englishman Richard Wallace, who financed their construction.  A great aesthetic success, they are recognized worldwide as one of the symbols of Paris.  A Wallace Fountain can be seen outside the Wallace Collection in London, the gallery that houses the works of art collected by Sir Richard Wallace and the first four Marquesses of Hertford.

Hana Makhmalbaf: Hana Makhmalbaf (Persian: حنا مخملباف‎ ‎ ) (born September 3, 1988 in Tehran) is an Iranian filmmaker.  She is the younger sister of filmmaker Samira Makhmalbaf and daughter of filmmakers Mohsen Makhmalbaf and Marzieh Makhmalbaf.

Blackboards: Blackboards (Persian: تخته سیاه‎ ‎ , "Takhté siah") is a 2000 Iranian film directed by Samira Makhmalbaf.  It focuses on a group of Kurdish refugees after the chemical bombing of Halabja by Saddam Hussein's Iraq during the Iran–Iraq War.  The screenplay was co-written by Makhmalbaf with her father, Mohsen Makhmalbaf.  The dialogue is entirely in Kurdish.  Makhmalbaf describes it as "something between reality and fiction.  Smuggling, being homeless, and people’s efforts to survive are all part of reality... the film, as a whole, is a metaphor."

American Beauty (1927 film): American Beauty is a lost 1927 American silent film romantic drama produced and distributed by First National Pictures.  This film was directed by Richard Wallace and starred Billie Dove.  It was based on a short story "American Beauty" by Wallace Irwin.  She is supported by Walter McGrail and Margaret Livingston.

Richard Wallace (director): Richard Wallace (August 26, 1894 – November 3, 1951) was an American film director.

The Apple (1998 film): The Apple (Persian: سیب‎ ‎ , translit.  "Sib") is the 1998 directorial debut by Samira Makhmalbaf, daughter of Iranian director Mohsen Makhmalbaf.  The film is based on a true story and features the real people that actually lived it.  The film was screened in the Un Certain Regard section at the 1998 Cannes Film Festival.

At Five in the Afternoon: At Five in the Afternoon (Persian: "پنج عصر, Panj é asr"‎ ‎ ) is a 2003 film by Iranian writer-director Samira Makhmalbaf.  It tells the story of an ambitious young woman trying to gain an education in Afghanistan after the defeat of the Taliban.  The title comes from a Federico García Lorca poem and is a tale of flourishing against the odds.

River of Romance: River of Romance is a 1929 American drama film directed by Richard Wallace and written by Ethel Doherty, Joseph L. Mankiewicz, Dan Totheroh and John V.A. Weaver.  The film stars Charles 'Buddy' Rogers, Mary Brian, June Collyer, Henry B. Walthall, Wallace Beery, Fred Kohler and Natalie Kingston.  It is based on the play "Magnolia" by Booth Tarkington.  The film was released on June 29, 1929, by Paramount Pictures.

Samira Makhmalbaf: Samira Makhmalbaf (Persian: ‎ ‎ , "Samiraa Makhmalbaaf") (born February 15, 1980) is an internationally acclaimed Iranian filmmaker and script writer.  She is the daughter of Mohsen Makhmalbaf, the film director and writer.  Samira Makhmalbaf is considered to be one of the most influential directors as part of the Iranian New Wave.

Supporting paragraphs: Richard Wallace (director) Samira Makhmalbaf
Answer: no