CREATE TABLE table_203_576 (id NUMBER, "rank" NUMBER, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

what is the difference in silver medals between china and chinese taipei ?
SELECT (SELECT "silver" FROM table_203_576 WHERE "nation" = 'china') - (SELECT "silver" FROM table_203_576 WHERE "nation" = 'chinese taipei')
SELECT (SELECT "silver" FROM "table_203_576" WHERE "nation" = 'china') - (SELECT "silver" FROM "table_203_576" WHERE "nation" = 'chinese taipei')