instruction: find the number of actors from Iran who played in ' Jim Jarmusch ' movies
response: SELECT COUNT(DISTINCT (actor.name)) FROM actor, cast, directed_by, director, movie WHERE actor.nationality = 'Iran' AND cast.aid = actor.aid AND director.did = directed_by.did AND director.name = 'Jim Jarmusch' AND movie.mid = cast.msid AND movie.mid = directed_by.msid