CREATE TABLE table_15262 ("Rank" FLOAT, "Team" TEXT, "Country" TEXT, "Value  ( $M ) " FLOAT, "Revenue  ( $M ) " FLOAT)

Name the least revenue for chelsea of england with rank less than 7
SELECT MIN("Revenue ($M)") FROM table_15262 WHERE "Country" = 'england' AND "Team" = 'chelsea' AND "Rank" < '7'
SELECT MIN("Revenue ($M)") FROM "table_15262" WHERE "Country" = 'england' AND "Rank" < '7' AND "Team" = 'chelsea'