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_49 (laps INTEGER, driver VARCHAR, grid VARCHAR, constructor VARCHAR)
  ### Question:
  What is the average Laps for a grid smaller than 17, and a Constructor of williams - bmw, driven by jenson button?
  ### Answer:
  SELECT AVG(laps) FROM table_name_49 WHERE grid < 17 AND constructor = "williams - bmw" AND driver = "jenson button"