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_10528691_4 (model INTEGER, introduction VARCHAR)
  ### Question:
  What is the model number introduced May 1999?
  ### Answer:
  SELECT MAX(model) FROM table_10528691_4 WHERE introduction = "May 1999"