CREATE TABLE table_53977 ("Rank" FLOAT, "Name" TEXT, "Nation" TEXT, "Placings" TEXT, "Figures" FLOAT, "Free" FLOAT, "Total" FLOAT)

What is the lowest figure score when the free is 556?
SELECT MIN("Figures") FROM table_53977 WHERE "Free" = '556'
SELECT MIN("Figures") FROM "table_53977" WHERE "Free" = '556'