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 captain (rank VARCHAR, CLASS VARCHAR)
### Question:
Find the captain rank that has no captain in Third-rate ship of the line class.
### Answer:
SELECT rank FROM captain EXCEPT SELECT rank FROM captain WHERE CLASS = 'Third-rate ship of the line'