CREATE TABLE table_80292 ("NBR number" FLOAT, "Year" FLOAT, "Original operator" CLOB, "Class" CLOB, "Wheel arrangement" CLOB, "Road number" FLOAT, "Location" CLOB)

Which class starts after 1939 and has a road number smaller than 3508?
SELECT "Class" FROM table_80292 WHERE "Year" > '1939' AND "Road number" < '3508'
SELECT "Class" FROM "table_80292" WHERE "Road number" < '3508' AND "Year" > '1939'