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_19393 ( "No. in series" real, "Title" text, "Directed by" text, "Written by" text, "Original air date" text, "Production code" real )

### 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_19393 WHERE "Written by" = 'Michael Dante DiMartino' AND "Directed by" = 'Lauren MacMullan'