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_19 (period INTEGER, element VARCHAR)
  ### Question:
  Which highest period's element is platinum?
  ### Answer:
  SELECT MAX(period) FROM table_name_19 WHERE element = "platinum"