user: Question: What is the largest byes with lost games of 4 and Ballarat FL of melton and the against less than 1819?
Columns: ['Ballarat FL', 'Wins', 'Byes', 'Losses', 'Draws', 'Against']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['East Point', 17.0, 0.0, 1.0, 0.0, 1000.0]
SQL:

assistant: SELECT MAX("Byes") FROM "Table" WHERE "Losses" = 4.0 AND "Ballarat FL" = 'melton' AND "Against" < 1819.0;