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_31 ( rank INTEGER, matches VARCHAR, total VARCHAR, county VARCHAR )

### Question ###
what is the rank when the total is 39 in the county of dublin and the matches is less than 4?

### Accurate SQL ###

SELECT AVG(rank) FROM table_name_31 WHERE total = 39 AND county = "dublin" AND matches < 4