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

### Instruction:
Which Year has a cause of firedamp and a Death toll larger than 11?

### Inputs:
table_name: table, columns: ['Colliery', 'Location', 'Date', 'Year', 'Death toll', 'cause']

### Response:
SELECT SUM Year FROM table WHERE cause = firedamp AND Death toll > 11