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

### Instruction:
What is the navy for middleton with a home port of portsmouth after 1983?

### Inputs:
table_name: table, columns: ['Navy', 'Name', 'Pennant', 'Commissioned', 'Home port']

### Response:
SELECT Navy FROM table WHERE Home port = portsmouth AND Commissioned > 1983 AND Name = middleton