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_46 (opponent VARCHAR, surface VARCHAR, date VARCHAR)
### Question:
Which Opponent has a Surface of hard on 28 august 1993?
### Answer:
SELECT opponent FROM table_name_46 WHERE surface = "hard" AND date = "28 august 1993"