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_41 (date VARCHAR, surface VARCHAR, opponent_in_the_final VARCHAR)
### Question:
What is the date for the grass surface final against Nathan Healey?
### Answer:
SELECT date FROM table_name_41 WHERE surface = "grass" AND opponent_in_the_final = "nathan healey"