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

### Instruction:
When dwhr-tv is the call sign how many station types are there?

### Inputs:
table_name: table, columns: ['Branding', 'Callsign', 'Ch. #', 'Power kW', 'Station Type', 'Location (Transmitter site)']

### Response:
SELECT COUNT Station Type FROM table WHERE Callsign = DWHR-TV