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_14 (surface VARCHAR, date VARCHAR)
  ### Question:
  What type of surface did they play on 21 July 1997
  ### Answer:
  SELECT surface FROM table_name_14 WHERE date = "21 july 1997"