Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
When the blank ends at 1, what is the PA?

### Inputs:
table_name: table, columns: ['Province', 'Skip', 'W', 'L', 'PF', 'PA', 'Ends Won', 'Ends Lost', 'Blank Ends', 'Stolen Ends', 'Shot Pct.']

### Response:
SELECT COUNT PA FROM table WHERE Blank Ends = 1