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_14 ( release_date VARCHAR, production_num VARCHAR )

### Question ###
What was the release date for Production Number 8181?

### Accurate SQL ###

SELECT release_date FROM table_name_14 WHERE production_num = "8181"