CREATE TABLE table_57004 ("Episode #" CLOB, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original airdate" CLOB)

What is the episode # of the episode that originally aired on January 21, 2001?
SELECT "Episode #" FROM table_57004 WHERE "Original airdate" = 'january 21, 2001'
SELECT "Episode #" FROM "table_57004" WHERE "Original airdate" = 'january 21, 2001'