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 ( release_date VARCHAR, series VARCHAR, title VARCHAR )

### Question ###
What is the release date of the mm series, which has the title tom thumb in trouble?

### Accurate SQL ###

SELECT release_date FROM table_name_40 WHERE series = "mm" AND title = "tom thumb in trouble"