CREATE TABLE table_28555 ("Episode #" FLOAT, "Prod #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Originalairdate" TEXT)

who directed the episode james clavell wrote?
SELECT "Directed by" FROM table_28555 WHERE "Written by" = 'James Clavell'
SELECT "Directed by" FROM "table_28555" WHERE "Written by" = 'James Clavell'