CREATE TABLE table_43274 ("element" TEXT, "group" FLOAT, "period" FLOAT, "reaction" TEXT, "potential" TEXT)

Which potential's period 5 is 4 and has an element of antimony?
SELECT "potential" FROM table_43274 WHERE "period" = '5' AND "element" = 'antimony'
SELECT "potential" FROM "table_43274" WHERE "element" = 'antimony' AND "period" = '5'