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_77 (date VARCHAR, surface VARCHAR, tournament VARCHAR)
### Question:
What date was the game played on the hard surface at the Tournament of Sweden f2?
### Answer:
SELECT date FROM table_name_77 WHERE surface = "hard" AND tournament = "sweden f2"