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_66 (engine VARCHAR, driver VARCHAR, chassis VARCHAR)
### Question:
What was the engine driven by Jean-Pierre Jarier and has a chassis of PC4?
### Answer:
SELECT engine FROM table_name_66 WHERE driver = "jean-pierre jarier" AND chassis = "pc4"