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_99 (date VARCHAR, surface VARCHAR, result VARCHAR)
### Question:
what is the date when the surface is clay and the result is 6–7 (4–7) , 1–6?
### Answer:
SELECT date FROM table_name_99 WHERE surface = "clay" AND result = "6–7 (4–7) , 1–6"