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_22 (post VARCHAR, trainer VARCHAR, time__behind VARCHAR)
### Question:
What is the total number of Post, when Trainer is "Steve Asmussen", and when Time/ Behind is 19 ½?
### Answer:
SELECT COUNT(post) FROM table_name_22 WHERE trainer = "steve asmussen" AND time__behind = "19 ½"