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_99 (area_served VARCHAR, callsign VARCHAR)
### Question:
Which area served has a Callsign of 5ddn?
### Answer:
SELECT area_served FROM table_name_99 WHERE callsign = "5ddn"