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_17012578_6 (pa VARCHAR, blank_ends VARCHAR)
### Question:
When the blank ends at 1, what is the PA?
### Answer:
SELECT COUNT(pa) FROM table_17012578_6 WHERE blank_ends = 1