CREATE TABLE table_55755 ("Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB)

What is the title of the episode with a production code of ad1b04?
SELECT "Title" FROM table_55755 WHERE "Production code" = 'ad1b04'
SELECT "Title" FROM "table_55755" WHERE "Production code" = 'ad1b04'