CREATE TABLE table_67997 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

What 1957 engine has a Chassis of connaught type b?
SELECT "Engine" FROM table_67997 WHERE "Chassis" = 'connaught type b' AND "Year" > '1957'
SELECT "Engine" FROM "table_67997" WHERE "Chassis" = 'connaught type b' AND "Year" > '1957'