user: Question: What was the Total the Year Yugoslavia had 0 Silver medals and 31 Competitors?
Columns: ['Year', 'Sports', 'Competitors', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1924 Chamonix', '1', '4', '0', '0', '0', '0']
SQL:

assistant: SELECT "Total" FROM "Table" WHERE "Silver" = '0' AND "Competitors" = '31';