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_57 (format VARCHAR, album VARCHAR, year VARCHAR)
### Question:
What is the format of the album Pacific Ocean Blue in 1991?
### Answer:
SELECT format FROM table_name_57 WHERE album = "pacific ocean blue" AND year = 1991