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

### Instruction:
How many digital terrestrial channels are there for channel 4?

### Inputs:
table_name: table, columns: ['Position', 'Channel', 'Analogue terrestrial channel', 'Digital terrestrial channel', 'Internet']

### Response:
SELECT COUNT Digital terrestrial channel FROM table WHERE Channel = Channel 4