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_17 (engine VARCHAR, driver VARCHAR, tyre VARCHAR, constructor VARCHAR)
  ### Question:
  what is the engine when the tyre is d, the constructor is era and the driver is bob gerard?
  ### Answer:
  SELECT engine FROM table_name_17 WHERE tyre = "d" AND constructor = "era" AND driver = "bob gerard"