CREATE TABLE table_203_716 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

how many more bronze medals did canada earn than venezuela ?
SELECT (SELECT "bronze" FROM table_203_716 WHERE "nation" = 'canada') - (SELECT "bronze" FROM table_203_716 WHERE "nation" = 'venezuela')
SELECT (SELECT "bronze" FROM "table_203_716" WHERE "nation" = 'canada') - (SELECT "bronze" FROM "table_203_716" WHERE "nation" = 'venezuela')