CREATE TABLE table_64388 ("Rank" FLOAT, "Heat" FLOAT, "Athlete" TEXT, "Country" TEXT, "Time" FLOAT)

what is the heat when the athlete is anita pistone?
SELECT SUM("Heat") FROM table_64388 WHERE "Athlete" = 'anita pistone'
SELECT SUM("Heat") FROM "table_64388" WHERE "Athlete" = 'anita pistone'