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

### Instruction:
What are the least Top-5 finish when the events are greater than 18?

### Inputs:
table_name: table, columns: ['Tournament', 'Wins', 'Top-5', 'Top-10', 'Top-25', 'Events', 'Cuts made']

### Response:
SELECT MIN Top-5 FROM table WHERE Events > 18