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_89 (grand_finalist VARCHAR, winners VARCHAR, year VARCHAR, margin VARCHAR)
  ### Question:
  What grand finalist had a year after 1979, a margin smaller than 30, and winners of essendon?
  ### Answer:
  SELECT grand_finalist FROM table_name_89 WHERE year > 1979 AND margin < 30 AND winners = "essendon"