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 (points_classification VARCHAR, general_classification VARCHAR, stage VARCHAR)
### Question:
What's the points classification of Stage 18 when the general classification was Denis Menchov?
### Answer:
SELECT points_classification FROM table_name_46 WHERE general_classification = "denis menchov" AND stage = "18"