CREATE TABLE table_name_54 (silver VARCHAR2, gold VARCHAR2, bronze VARCHAR2)

How many silver medals were won by the participant(s) that had more than 12 gold medals and 11 bronze medals?
SELECT silver FROM table_name_54 WHERE gold > 12 AND bronze = 11
SELECT "silver" FROM "table_name_54" WHERE "bronze" = 11 AND "gold" > 12