Question: Do both films Coogan'S Bluff (Film) and The Mercenary (Film) have the directors that share the same nationality?
Sentence (from "Coogan's Bluff (film)"): Coogan's Bluff is a 1968 American action thriller film directed by Don Siegel, and starring Clint Eastwood, Lee J. Cobb, Don Stroud and Susan Clark.
Relevant evidence: Yes