user: Question: What is the Lowest value in Against with Wins % of 50.4% and Losses less than 20?
Columns: ['Team', 'Matches', 'Wins', 'Wins %', 'Draws', 'Draws %', 'Losses', 'Losses %', 'Against']
Types: ['text', 'real', 'real', 'text', 'real', 'text', 'real', 'text', 'real']
Sample row: ['Atalanta', 113.0, 65.0, '57.5%', 26.0, '23%', 22.0, '19.5%', 99.0]
SQL:

assistant: SELECT MIN("Against") FROM "Table" WHERE "Wins %" = '50.4%' AND "Losses" < 20.0;