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

### Instruction:
What is the running time of the transmission on bbc four channels on 23 March 2008?

### Inputs:
table_name: table, columns: ['Date', 'Time', 'Channel', 'Running Time', 'Notes']

### Response:
SELECT Running Time FROM table WHERE Channel = bbc four AND Date = 23 march 2008