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 (year INTEGER, chassis VARCHAR)
  ### Question:
  What is the average Year with Chassis equalling cooper t60?
  ### Answer:
  SELECT AVG(year) FROM table_name_49 WHERE chassis = "cooper t60"