Where was the tournament that happened in 1987 on a clay surface?
CREATE TABLE table_name_18 (tournament VARCHAR, date VARCHAR, surface VARCHAR)
SELECT tournament FROM table_name_18 WHERE date = 1987 AND surface = "clay"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_18 (tournament VARCHAR, date VARCHAR, surface VARCHAR) Question: Where was the tournament that happened in 1987 on a clay surface? [/INST] SELECT tournament FROM table_name_18 WHERE date = 1987 AND surface = "clay" </s>