What type of surface was used for the game played on September 20, 1993?
CREATE TABLE table_name_93 (surface VARCHAR, date VARCHAR)
SELECT surface FROM table_name_93 WHERE date = "september 20, 1993"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_93 (surface VARCHAR, date VARCHAR) Question: What type of surface was used for the game played on September 20, 1993? [/INST] SELECT surface FROM table_name_93 WHERE date = "september 20, 1993" </s>