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_14562722_1 ( production_code VARCHAR, written_by VARCHAR, directed_by VARCHAR )

### Question ###
What was the production code of the episode that was written by michael dante dimartino and directed by lauren macmullan?

### Accurate SQL ###

SELECT production_code FROM table_14562722_1 WHERE written_by = "Michael Dante DiMartino" AND directed_by = "Lauren MacMullan"