CREATE TABLE table_71245 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

Name the engine for years before 1990 and chassis of eurobrun er189
SELECT "Engine" FROM table_71245 WHERE "Year" < '1990' AND "Chassis" = 'eurobrun er189'
SELECT "Engine" FROM "table_71245" WHERE "Chassis" = 'eurobrun er189' AND "Year" < '1990'