Question: Do both directors of films Permanent Vacation (1980 film) and Only the Valiant share the same nationality?
Sentence (from "Only the Valiant"): Only the Valiant, also known as Fort Invincible, is a 1951 Western film produced by William Cagney( younger brother of James Cagney), directed by Gordon Douglas and starring Gregory Peck, Barbara Payton, and Ward Bond.
Relevant evidence: Yes