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_23982399_1 (challenger VARCHAR, overall_episode__number VARCHAR)

### Question ###
Who was the challenger on Episode 5?

### Accurate SQL ###

SELECT challenger FROM table_23982399_1 WHERE overall_episode__number = 5