user: Question: What is the mean number of against when the position is less than 1?
Columns: ['Position', 'Team', 'Points', 'Played', 'Drawn', 'Lost', 'Against', 'Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'Palestra Itália-SP', 33.0, 20.0, 3.0, 2.0, 19.0, '34']
SQL:

assistant: SELECT AVG("Against") FROM "Table" WHERE "Position" < 1.0;