user: Question: Which episode has a Challenge Winner of Berto?
Columns: ['Episode', '7 Deadly Sin', 'Challenge Winner', 'Challenge Loser', "Voted In To 'El Duelo'", 'Eliminated']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1A', 'Passion', 'Silvia & Vinci', 'Janet', 'Jainmy & Maria', 'Maria']
SQL:

assistant: SELECT "Episode" FROM "Table" WHERE "Challenge Winner" = 'Berto';