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_61 (band VARCHAR, area_served VARCHAR, purpose VARCHAR)
### Question:
Which band serves darwin for commercial purpose?
### Answer:
SELECT band FROM table_name_61 WHERE area_served = "darwin" AND purpose = "commercial"