CREATE TABLE table_15640 ("Rank" FLOAT, "Team" TEXT, "Country" TEXT, "Value  ( $M ) " FLOAT, "% change on year" FLOAT, "Revenue  ( $M ) " FLOAT)

What is the lowest revenue for the rank of 14?
SELECT MIN("Revenue ($M)") FROM table_15640 WHERE "Rank" = '14'
SELECT MIN("Revenue ($M)") FROM "table_15640" WHERE "Rank" = '14'