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 school_bus (years_working INTEGER)
  ### Question:
  What is the maximum, minimum and average years spent working on a school bus?
  ### Answer:
  SELECT MAX(years_working), MIN(years_working), AVG(years_working) FROM school_bus