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_50 (silver INTEGER, bronze VARCHAR, gold VARCHAR)

### Question ###
How many Silver medals were won in total by all those with more than 3 bronze and exactly 16 gold?

### Accurate SQL ###

SELECT SUM(silver) FROM table_name_50 WHERE bronze > 3 AND gold = 16