CREATE TABLE table_71353 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What is the Chassis from before 1997 with a Lamborghini v12 engine?
SELECT "Chassis" FROM table_71353 WHERE "Year" < '1997' AND "Engine" = 'lamborghini v12'
SELECT "Chassis" FROM "table_71353" WHERE "Engine" = 'lamborghini v12' AND "Year" < '1997'