Question: Are both directors of films Jan Žižka (1955 Film) and Airport 1975 from the same country?
Sentence (from "Airport 1975"): Airport 1975( also known as Airport'75) is a 1974 American air disaster film and the first sequel to the successful 1970 film" AirportAirport 1975" was directed by Jack Smight, produced by William Frye and Jennings Lang and has a screenplay by Don Ingalls.
Relevant evidence: Yes