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

### Instruction:
Which Display size (in) has a Model of vaio pcg-u3?

### Inputs:
table_name: table, columns: ['Model', 'Manufacturer', 'Weight (kg)', 'Display size (in)', 'Processor model', 'Storage type']

### Response:
SELECT COUNT Display size (in) FROM table WHERE Model = vaio pcg-u3