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 (rank INTEGER, silver VARCHAR, gold VARCHAR, total VARCHAR)

### Question ###
What is the rank of a country with more than 2 gold, less than 5 silver, and less than 31 total medals?

### Accurate SQL ###

SELECT SUM(rank) FROM table_name_67 WHERE gold > 2 AND total < 31 AND silver < 5