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_66 (road_numbers VARCHAR, class VARCHAR)
### Question:
what is the road numbers when the class is z-7?
### Answer:
SELECT road_numbers FROM table_name_66 WHERE class = "z-7"