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_67 (silver INTEGER, total VARCHAR, gold VARCHAR, bronze VARCHAR)

### Question ###
What team had less than 291 total points whole having 76 bronze and over 21 gold?

### Accurate SQL ###

SELECT SUM(silver) FROM table_name_67 WHERE gold > 21 AND bronze = 76 AND total < 291