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_46 (length__m_ VARCHAR, name VARCHAR)
### Question:
What is the Length (m) of the Koppenberg course?
### Answer:
SELECT length__m_ FROM table_name_46 WHERE name = "koppenberg"