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

### Instruction:
What is the highest Top-5 that has 18 or more events with a Top-25 of 23?

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

### Response:
SELECT MAX Top-5 FROM table WHERE Events > 18 AND Top-25 = 23