Question: Are Charles Burnett and Frank R. Strayer both African-Americans?

Context paragraphs:
Blondie in Society: Blondie in Society is a 1941 black and white comedy film, directed by Frank R. Strayer.  It is the ninth of the 28 Blondie films.

Blondie Takes a Vacation: Blondie Takes a Vacation is a 1939 black-and-white comedy film, directed by Frank R. Strayer.  The film is based on Chic Young's comic strip of the same name.

Blondie's Blessed Event: Blondie's Blessed Event is a 1942 black and white comedy film, directed by Frank R. Strayer.  It is the eleventh of the Blondie films.

Charles Burnett (director): Charles Burnett (born April 13, 1944, in Vicksburg, Mississippi) is an African-American film director, film producer, writer, editor, actor, photographer, and cinematographer.  His most popular films include "Killer of Sheep" (1978), "My Brother's Wedding" (1983), "To Sleep with Anger" (1990), "The Glass Shield" (1994), and "" (2007).  He has been involved in other types of motion pictures including shorts, documentaries, and a TV series.

One in a Million (1934 film): One in a Million is a 1934 American drama film directed by Frank R. Strayer and starring Dorothy Wilson, Charles Starrett and Guinn 'Big Boy' Williams.

Frank R. Strayer: Frank R. Strayer (September 21, 1891 – February 3, 1964) was an actor, film writer, director and producer.  He was active from the mid-1920s until the early 1950s.

Just Married (1928 film): Just Married is a 1928 American comedy silent film directed by Frank R. Strayer and written by Frank Butler, George Marion Jr., Adelaide Matthews, Anne Nichols and Gilbert Pratt.  The film stars James Hall, Ruth Taylor, Harrison Ford, William Austin, Ivy Harris, Tom Ricketts and Maude Turner Gordon.  The film was released on August 18, 1928, by Paramount Pictures.

Killer of Sheep: Killer of Sheep is a 1978 American drama film written, directed, produced, and shot by Charles Burnett.  It features Henry G. Sanders, Kaycee Moore, and Charles Bracy, among others.  The drama depicts the culture of urban African-Americans in Los Angeles' Watts district.  The film's style is often likened to Italian neorealism.

Mama Loves Papa (1945 film): Mama Loves Papa is a 1945 American black-and-white comedy film directed by Frank R. Strayer, and written by Monte Brice, with a story by Keene Thompson and a screenplay by Charles E. Roberts, as a loose remake of the 1933 film of the same name written by Douglas MacLean.  The film was produced by RKO Radio Pictures and stars Leon Errol and Elizabeth Risdon.

Caught Cheating: Caught Cheating is a 1931 American comedy film directed by Frank R. Strayer from a screenplay by W. Scott Darling.  The film stars Charles Murray, George Sidney, and Nita Martan, and it was released by Tiffany Productions on January 31, 1931.

Supporting paragraphs: Charles Burnett (director) Frank R. Strayer
Answer: no