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 ship (name VARCHAR, CLASS VARCHAR, ship_id VARCHAR); CREATE TABLE captain (name VARCHAR, CLASS VARCHAR, ship_id VARCHAR)
### Question:
what are the names and classes of the ships that do not have any captain yet?
### Answer:
SELECT name, CLASS FROM ship WHERE NOT ship_id IN (SELECT ship_id FROM captain)