Question: What nationality is the director of film The Betrayal (1948 Film)?
Sentence (from "Oscar Micheaux"): Although the short-lived Lincoln Motion Picture Company was the first movie company owned and controlled by black filmmakers, Micheaux is regarded as the first major African-American feature filmmaker, a prominent producer of race film, and has been described as "the most successful African-American filmmaker of the first half of the 20th century".
Relevant evidence: No