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_9 (totaltk INTEGER, yards INTEGER)
  ### Question:
  what is the sum of totaltk when yards is less than 0?
  ### Answer:
  SELECT SUM(totaltk) FROM table_name_9 WHERE yards < 0