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

### Instruction:
What is the lwoest round of wild bill's fight night 21 at 5:00?

### Inputs:
table_name: table, columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']

### Response:
SELECT MIN Round FROM table WHERE Time = 5:00 AND Event = wild bill's fight night 21