CREATE TABLE table_72724 ("Episode No." FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB)

Who directed episode number 3?
SELECT "Directed by" FROM table_72724 WHERE "Episode No." = '3'
SELECT "Directed by" FROM "table_72724" WHERE "Episode No." = '3'