Question: Do both directors of films Lightning Speed and He Knows You'Re Alone have the same nationality?
Sentence (from "Robert North Bradbury"): Robert N. Bradbury( March 23, 1886 – November 24, 1949)( born Ronald E. Bradbury) was an American film director and screenwriter who directed 125 movies between 1918 and 1941.
Relevant evidence: Yes