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

### Instruction:
Which event was in round 1, resulted in a win, and a record of 15-4?

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

### Response:
SELECT Event FROM table WHERE Round = 1 AND Res. = win AND Record = 15-4