CREATE TABLE table_name_71 (silver VARCHAR2, bronze VARCHAR2, nation VARCHAR2)

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_name_71 WHERE bronze = 0 AND nation = "united kingdom"
SELECT COUNT("silver") FROM "table_name_71" WHERE "bronze" = 0 AND "nation" = "united kingdom"