CREATE TABLE table_4025 ("Representative" TEXT, "Party" TEXT, "Years" TEXT, "Congress" TEXT, "District Home" TEXT, "Occupation" TEXT, "Electoral history" TEXT)

What frame of time is listed under years during the 72nd congress?
SELECT "Years" FROM table_4025 WHERE "Congress" = '72nd'
SELECT "Years" FROM "table_4025" WHERE "Congress" = '72nd'