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

### Instruction:
Against what team did the Islanders have a 5-18-5 record?

### Inputs:
table_name: table, columns: ['Game', 'December', 'Opponent', 'Score', 'Location/Attendance', 'Record', 'Points']

### Response:
SELECT Opponent FROM table WHERE Record = 5-18-5