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_27 (notes VARCHAR, built VARCHAR)
### Question:
What are the Notes of the Mill Built in the 19th Century?
### Answer:
SELECT notes FROM table_name_27 WHERE built = "19th century"