user: Question: What is the average number lost when the against value is less than 5?
Columns: ['Position', 'Team', 'Points', 'Played', 'Won by 2 or more goals difference', 'Drawn', 'Lost', 'Against', 'Difference']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'Fluminense', 14.0, 7.0, 3.0, 1.0, 1.0, 5.0, '9']
SQL:

assistant: SELECT AVG("Lost") FROM "Table" WHERE "Against" < 5.0;