user: Question: How many gold medals when the total is more than 1 and 18 silver?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['1', 'Norway', 5.0, 1.0, 3.0, 9.0]
SQL:

assistant: SELECT SUM("Gold") FROM "Table" WHERE "Total" > 1.0 AND "Silver" = 18.0;