How many silver medals did spain have when they had more than 0 bronze medals and less than 54 total medals?
CREATE TABLE table_64994 (
    "Rank" text,
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
)
SELECT "Silver" FROM table_64994 WHERE "Bronze" > '0' AND "Total" < '54' AND "Nation" = 'spain'
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: How many silver medals did spain have when they had more than 0 bronze medals and less than 54 total medals? ### Input: CREATE TABLE table_64994 (
    "Rank" text,
    "Nation" text,
    "Gold" real,
    "Silver" real,
    "Bronze" real,
    "Total" real
) ### Response: SELECT "Silver" FROM table_64994 WHERE "Bronze" > '0' AND "Total" < '54' AND "Nation" = 'spain'