Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_68 (entrant VARCHAR, engine VARCHAR, chassis VARCHAR)
### Question:
What team uses a Cosworth DFV V8 engine and DN9 Chassis?
### Answer:
SELECT entrant FROM table_name_68 WHERE engine = "cosworth dfv v8" AND chassis = "dn9"