CREATE TABLE table_21635 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT)

Who directed the episode titled 'the advocate'?
SELECT "Directed by" FROM table_21635 WHERE "Title" = 'The Advocate'
SELECT "Directed by" FROM "table_21635" WHERE "Title" = 'The Advocate'