CREATE TABLE table_36604 ("Rank" CLOB, "Nation" CLOB, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

How much Silver has a Nation of mexico, and a Total larger than 1?
SELECT SUM("Silver") FROM table_36604 WHERE "Nation" = 'mexico' AND "Total" > '1'
SELECT SUM("Silver") FROM "table_36604" WHERE "Nation" = 'mexico' AND "Total" > '1'