CREATE TABLE table_11658 ("Sport" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

When volleyball has 2 bronze, what is the total number of silver?
SELECT COUNT("Silver") FROM table_11658 WHERE "Bronze" = '2' AND "Sport" = 'volleyball'
SELECT COUNT("Silver") FROM "table_11658" WHERE "Bronze" = '2' AND "Sport" = 'volleyball'