CREATE TABLE table_73287 ("Season" FLOAT, "Episode" FLOAT, "Episode Summary" TEXT, "Premier date" TEXT, "External Link" TEXT, "Coach" TEXT)

What coach premiered February 16, 2008 later than episode 21.0?
SELECT "Coach" FROM table_73287 WHERE "Premier date" = 'February 16, 2008' AND "Episode" > '21.0'
SELECT "Coach" FROM "table_73287" WHERE "Episode" > '21.0' AND "Premier date" = 'February 16, 2008'