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_40 (director VARCHAR, series VARCHAR, production_num VARCHAR)

### Question ###
What director has lt as the series, with 6982 as the production num.?

### Accurate SQL ###

SELECT director FROM table_name_40 WHERE series = "lt" AND production_num = "6982"