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_25 (area__km²_ VARCHAR, principal_town_city VARCHAR)
### Question:
What is the area of Waterford?
### Answer:
SELECT area__km²_ FROM table_name_25 WHERE principal_town_city = "waterford"