user: Question: What is the sum of Gold with Participants that are 4 and a Silver that is smaller than 0?
Columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total', 'Participants']
Types: ['real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 7.0, 2.0, 2.0, 11.0, 22.0]
SQL:

assistant: SELECT SUM("Gold") FROM "Table" WHERE "Participants" = 4.0 AND "Silver" < 0.0;