CREATE TABLE table_37924 ("Rank" FLOAT, "Province" CLOB, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What team had less than 291 total points whole having 76 bronze and over 21 gold?
SELECT SUM("Silver") FROM table_37924 WHERE "Gold" > '21' AND "Bronze" = '76' AND "Total" < '291'
SELECT SUM("Silver") FROM "table_37924" WHERE "Bronze" = '76' AND "Gold" > '21' AND "Total" < '291'