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_73 (chassis VARCHAR, engine VARCHAR, drivers VARCHAR)
### Question:
What chassis did Gordon Johncock use with his cosworth engine?
### Answer:
SELECT chassis FROM table_name_73 WHERE engine = "cosworth" AND drivers = "gordon johncock"