text: 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_91 (driver VARCHAR, time_retired VARCHAR, grid VARCHAR)
  ### Question:
  Who drive the car that retired due to engine failure and a grid of less than 9?
  ### Answer:
  SELECT driver FROM table_name_91 WHERE time_retired = "engine" AND grid < 9