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

### Instruction:
Which bubble have a cancelable of yes and an attribute of onpointerdown?

### Inputs:
table_name: table, columns: ['Category', 'Type', 'Attribute', 'Bubbles', 'Cancelable']

### Response:
SELECT Bubbles FROM table WHERE Cancelable = yes AND Attribute = onpointerdown