CREATE TABLE table_name_7 (silver VARCHAR2, nation VARCHAR2, bronze VARCHAR2, total VARCHAR2)

How many silver medals did spain have when they had more than 0 bronze medals and less than 54 total medals?
SELECT silver FROM table_name_7 WHERE bronze > 0 AND total < 54 AND nation = "spain"
SELECT "silver" FROM "table_name_7" WHERE "bronze" > 0 AND "nation" = "spain" AND "total" < 54