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

### Instruction:
How many average wins have USA as the team?

### Inputs:
table_name: table, columns: ['Pos.', 'Team', 'Wins', 'Ties', 'Losses', 'Goals', 'Diff.', 'Points']

### Response:
SELECT AVG Wins FROM table WHERE Team = usa