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_18 (tournament VARCHAR, date VARCHAR, surface VARCHAR)
### Question:
Where was the tournament that happened in 1987 on a clay surface?
### Answer:
SELECT tournament FROM table_name_18 WHERE date = 1987 AND surface = "clay"