CREATE TABLE table_20349 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written By" TEXT, "Originalairdate" TEXT, "TV Broadcast" TEXT)

Who was the director of the episode 'graduation day: class of 2105'?
SELECT "Directed by" FROM table_20349 WHERE "Title" = 'Graduation Day: Class of 2105'
SELECT "Directed by" FROM "table_20349" WHERE "Title" = 'Graduation Day: Class of 2105'