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

### Instruction:
Name the highest Decile for roll more than 325 and area of warkworth

### Inputs:
table_name: table, columns: ['Name', 'Years', 'Area', 'Authority', 'Decile', 'Roll']

### Response:
SELECT MAX Decile FROM table WHERE Roll > 325 AND Area = warkworth