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

### Instruction:
Enrollment that has a School of south central (union mills) has what sum?

### Inputs:
table_name: table, columns: ['School', 'City', 'Mascot', 'Enrollment', 'County']

### Response:
SELECT SUM Enrollment FROM table WHERE School = south central (union mills)