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_98 (team VARCHAR, coach VARCHAR, location VARCHAR)
### Question:
Which team has an unknown coach and location of Athelstone?
### Answer:
SELECT team FROM table_name_98 WHERE coach = "unknown" AND location = "athelstone"