user: Question: What is the Total with the Event 2004 athens and Gold less than 20?
Columns: ['Event', 'Gold', 'Silver', 'Bronze', 'Total', 'Ranking']
Types: ['text', 'real', 'real', 'real', 'real', 'text']
Sample row: ['1968 Tel-Aviv', 0.0, 4.0, 0.0, 4.0, '20th of 22']
SQL:

assistant: SELECT SUM("Total") FROM "Table" WHERE "Event" = '2004 athens' AND "Gold" < 20.0;