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

### Instruction:
What year did Culver leave?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Mascot', '# / County', 'Year joined', 'Previous conference', 'Year left', 'New conference']

### Response:
SELECT SUM Year left FROM table WHERE Location = culver