Question: How many films did the actress that is starred in the comic play by Noel Coward and is bet known for her outstanding stage triumph in the role of Blanche du Bois, appear in?
Sentence (from "The Star of Ethiopia"): Outlining the history of African-Americans throughout time, pageants were held in high regard by Du Bois who felt that Pageants could be utilized best as a form of educational theatre, or as an instructional tool to not only teach African Americans the meaning of their history, but also enlighten whites as to "reveal the negro...as human."
Relevant evidence: No