CREATE TABLE table_11987 ("Rank" FLOAT, "Nation" CLOB, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What is the total number of silver medals when there are 0 Bronze medals, and the nation is the United Kingdom?
SELECT COUNT("Silver") FROM table_11987 WHERE "Bronze" = '0' AND "Nation" = 'united kingdom'
SELECT COUNT("Silver") FROM "table_11987" WHERE "Bronze" = '0' AND "Nation" = 'united kingdom'