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_68481 ( "Episode" text, "First aired" text, "Entrepreneur(s)" text, "Company or product name" text, "Money requested (\u00a3)" text, "Investing Dragon(s)" text )

### Question ###
What episode featured entrepreneur Richard Ernest?

### Accurate SQL ###

SELECT "First aired" FROM table_68481 WHERE "Entrepreneur(s)" = 'richard ernest'