CREATE TABLE table_name_21 (silver INT, bronze VARCHAR, total VARCHAR, nation VARCHAR)

What is the sum of all silver medals with less than 23 medals in total and more than 3 bronze medals for the United States?
SELECT SUM(silver) FROM table_name_21 WHERE total < 23 AND nation = "united states" AND bronze > 3
SELECT SUM("silver") FROM "table_name_21" WHERE "bronze" > 3 AND "nation" = "united states" AND "total" < 23