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_86 (engine_† VARCHAR, chassis VARCHAR, driver VARCHAR)
### Question:
What engine did David Coulthard have in his mp4-13 chassis?
### Answer:
SELECT engine_† FROM table_name_86 WHERE chassis = "mp4-13" AND driver = "david coulthard"