CREATE TABLE table_26307 ("No." FLOAT, "Episode" TEXT, "Rating" TEXT, "Share" FLOAT, "Rating/share  ( 18-49 ) " TEXT, "Viewers  ( millions ) " TEXT, "Rank  ( timeslot ) " FLOAT, "Rank  ( night ) " FLOAT)

What number episode had a rating of 4.7?
SELECT MIN("No.") FROM table_26307 WHERE "Rating" = '4.7'
SELECT MIN("No.") FROM "table_26307" WHERE "Rating" = '4.7'