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

### Instruction:
Who is the opponent of the match with a method of submission (armbar) and a 9-3-1 record?

### Inputs:
table_name: table, columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']

### Response:
SELECT Opponent FROM table WHERE Method = submission (armbar) AND Record = 9-3-1