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_19930660_3 (first_broadcast VARCHAR, episode VARCHAR)

### Question ###
What is the first broadcast date for episode 3x10?

### Accurate SQL ###

SELECT first_broadcast FROM table_19930660_3 WHERE episode = "3x10"