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

### Instruction:
what is the county when the year left is 1998?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Mascot', 'County', 'Year Joined', 'Previous Conference', 'Year Left']

### Response:
SELECT County FROM table WHERE Year Left = 1998