Database: imdb
Question: find the number of actors from Iran who played in " Jim Jarmusch " movies
SQL: select count ( distinct t1.name  ) from cast as t4 join actor as t1 on t4.aid  =  t1.aid join movie as t5 on t5.mid  =  t4.msid join directed_by as t2 on t5.mid  =  t2.msid join director as t3 on t3.did  =  t2.did where t1.nationality  =  "iran" and t3.name  =  "jim jarmusch";