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 (surface VARCHAR, date VARCHAR)
  ### Question:
  What surface was used on may 13, 2007?
  ### Answer:
  SELECT surface FROM table_name_19 WHERE date = "may 13, 2007"