CREATE TABLE table_234 ("Season" FLOAT, "Season premiere" CLOB, "Season finale" CLOB, "TV season" CLOB, "Ranking" CLOB, "Viewers  ( in millions ) " CLOB)

When did the season air where the viewership was 14.71 million?
SELECT "Season premiere" FROM table_234 WHERE "Viewers (in millions)" = '14.71'
SELECT "Season premiere" FROM "table_234" WHERE "Viewers (in millions)" = '14.71'