Question: Who is the father of the director of film El Pibe Cabeza?
Sentence (from "Leopoldo Torre Nilsson"): "Martín Fierro" (1968), about the main character of Argentina's national poem; "El Santo de la Espada" (1970), about General José de San Martín; and  (1971), about Martín Miguel de Güemes.
Relevant evidence: No