CREATE TABLE table_30903 ("Episode" FLOAT, "First Air Date" CLOB, "Rating  ( 18\\u201349 ) " CLOB, "Share  ( 18\\u201349 ) " FLOAT, "Viewers  ( millions ) " CLOB, "Rank  ( timeslot ) " CLOB)

When 4 is the episode what is the air date?
SELECT "First Air Date" FROM table_30903 WHERE "Episode" = '4'
SELECT "First Air Date" FROM "table_30903" WHERE "Episode" = '4'