CREATE TABLE table_74647 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine" CLOB, "Driver" CLOB)

What team uses a Cosworth DFV V8 engine and DN9 Chassis?
SELECT "Entrant" FROM table_74647 WHERE "Engine" = 'cosworth dfv v8' AND "Chassis" = 'dn9'
SELECT "Entrant" FROM "table_74647" WHERE "Chassis" = 'dn9' AND "Engine" = 'cosworth dfv v8'