Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_7 ( silver VARCHAR, nation VARCHAR, bronze VARCHAR, total VARCHAR )

### Question ###
How many silver medals did spain have when they had more than 0 bronze medals and less than 54 total medals?

### Accurate SQL ###

SELECT silver FROM table_name_7 WHERE bronze > 0 AND total < 54 AND nation = "spain"