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_39 (surface VARCHAR, opponents VARCHAR)
### Question:
What is Surface, when Opponents is "Daniel Nestor Sandon Stolle"?
### Answer:
SELECT surface FROM table_name_39 WHERE opponents = "daniel nestor sandon stolle"