Question: When is the director of film Mientras Buenos Aires Duerme 's birthday?
Sentence (from "José A. Ferreyra"): José A(gustín) Ferreyra (28 August 1889 – 29 January 1943), popularly known as "Negro Ferreyra" (Black Ferreyra, due to his mulato ethnicity), was an early Argentine film director, screenwriter and film producer.
Relevant evidence: Yes