user: Question: What was the biggest draws, for wins under 4, and points of 20-18?
Columns: ['Position', 'Club', 'Played', 'Points', 'Wins', 'Draws', 'Losses', 'Goals for', 'Goals against', 'Goal Difference']
Types: ['real', 'text', 'real', 'text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'CP Mérida', 38.0, '56+18', 23.0, 10.0, 5.0, 55.0, 19.0, 36.0]
SQL:

assistant: SELECT MAX("Draws") FROM "Table" WHERE "Points" = '20-18' AND "Wins" < 4.0;