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

### Instruction:
How many sales took place with a peak of 1 for Boris?

### Inputs:
table_name: table, columns: ['Pos.', 'Artist', 'Single', 'Year', 'Sales', 'Peak']

### Response:
SELECT COUNT Sales FROM table WHERE Peak = 1 AND Artist = boris