What type of surface did they play on 21 July 1997
CREATE TABLE table_name_14 (surface VARCHAR, date VARCHAR)
SELECT surface FROM table_name_14 WHERE date = "21 july 1997"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_14 (surface VARCHAR, date VARCHAR) Question: What type of surface did they play on 21 July 1997 [/INST] SELECT surface FROM table_name_14 WHERE date = "21 july 1997" </s>