CREATE TABLE table_56211 ("Class" TEXT, "Wheel arrangement" TEXT, "Manufacturer" TEXT, "Year made" TEXT, "Quantity made" TEXT, "Quantity preserved" TEXT, "Year ( s )  withdrawn" TEXT)

Name the year for hercules
SELECT "Year made" FROM table_56211 WHERE "Class" = 'hercules'
SELECT "Year made" FROM "table_56211" WHERE "Class" = 'hercules'