user: Question: What team had less than 291 total points whole having 76 bronze and over 21 gold?
Columns: ['Rank', 'Province', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Bangkok', 125.0, 90.0, 76.0, 291.0]
SQL:

assistant: SELECT "Silver" FROM "Table" WHERE "Gold" > 21.0 AND "Bronze" = 76.0 AND "Total" < 291.0;