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

### Instruction:
What was the maximum vertical measurement if the horizon measurement is 640?

### Inputs:
table_name: table, columns: ['Vertical', 'Horizontal', 'Aspect ratio', 'Pixel aspect ratio', 'Scanning', 'Frame rate ( Hz )']

### Response:
SELECT MAX Vertical FROM table WHERE Horizontal = 640