what is the heat when the athlete is anita pistone?
CREATE TABLE table_64388 (
    "Rank" real,
    "Heat" real,
    "Athlete" text,
    "Country" text,
    "Time" real
)
SELECT SUM("Heat") FROM table_64388 WHERE "Athlete" = 'anita pistone'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what is the heat when the athlete is anita pistone? ### Input: CREATE TABLE table_64388 (
    "Rank" real,
    "Heat" real,
    "Athlete" text,
    "Country" text,
    "Time" real
) ### Response: SELECT SUM("Heat") FROM table_64388 WHERE "Athlete" = 'anita pistone'