CREATE TABLE table_3518 ("Episode #" CLOB, "Season Episode #" CLOB, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Prod. code" CLOB)

What is the number of air dates titled 'The Big Job'?
SELECT COUNT("Original air date") FROM table_3518 WHERE "Title" = 'The Big Job'
SELECT COUNT("Original air date") FROM "table_3518" WHERE "Title" = 'The Big Job'