CREATE TABLE table_1339 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by:" CLOB, "Written by:" CLOB, "Original air date" CLOB)

When the season number is listed as 4 what is the original airdate?
SELECT "Original air date" FROM table_1339 WHERE "Season #" = '4'
SELECT "Original air date" FROM "table_1339" WHERE "Season #" = '4'