CREATE TABLE table_4003 ("\\u2116" FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

Who directed the episode whose production code is pabf05?
SELECT "Directed by" FROM table_4003 WHERE "Production code" = 'PABF05'
SELECT "Directed by" FROM "table_4003" WHERE "Production code" = 'PABF05'