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_34 (manufacturer VARCHAR, wheel_arrangement VARCHAR, class VARCHAR)
### Question:
What manufacturer has a wheel arrangement of 4-6-6-4, and a Class of z-7?
### Answer:
SELECT manufacturer FROM table_name_34 WHERE wheel_arrangement = "4-6-6-4" AND class = "z-7"