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

### Instruction:
What is the average earnings of a United States player who had a score of 72-68-74-72=286?

### Inputs:
table_name: table, columns: ['Place', 'Player', 'Country', 'Score', 'To par', 'Earnings ( $ )']

### Response:
SELECT AVG Earnings ( $ ) FROM table WHERE Country = united states AND Score = 72-68-74-72=286