what is the road numbers when the class is z-7?
CREATE TABLE table_name_66 (road_numbers VARCHAR, class VARCHAR)
SELECT road_numbers FROM table_name_66 WHERE class = "z-7"
### 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"