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

### Instruction:
The school of Portage was in what conference previous?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Mascot', 'County', 'Enrollment 08-09', 'IHSAA Class', 'IHSAA Class Football', 'Year Joined', 'Previous Conference']

### Response:
SELECT Previous Conference FROM table WHERE School = portage