CREATE TABLE table_21391 ("Year  ( Ceremony ) " TEXT, "Film title used in nomination" TEXT, "Original title" TEXT, "Language ( s ) " TEXT, "Director" TEXT, "Result" TEXT)

Who was the director of the film with an original title of '16 Days in Afghanistan'?
SELECT "Director" FROM table_21391 WHERE "Original title" = '16 Days in Afghanistan'
SELECT "Director" FROM "table_21391" WHERE "Original title" = '16 Days in Afghanistan'