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 (inversions INTEGER, opened VARCHAR)
  ### Question:
  Name the sum of inversions for opened of april 20, 2002
  ### Answer:
  SELECT SUM(inversions) FROM table_name_89 WHERE opened = "april 20, 2002"