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

### Instruction:
How many seats have a quantity over 45?

### Inputs:
table_name: table, columns: ['System', 'Owner', 'Quantity', 'Delivery', 'Length', 'Gauge', 'Operation', 'Seats', 'Standing']

### Response:
SELECT SUM Seats FROM table WHERE Quantity > 45