user: Question: What is the average earnings of a United States player who had a score of 72-68-74-72=286?
Columns: ['Place', 'Player', 'Country', 'Score', 'To par', 'Earnings ( $ )']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1', 'Doug Ford', 'United States', '72-73-72-66=283', '–5', 8750.0]
SQL:

assistant: SELECT AVG("Earnings ( $ )") FROM "Table" WHERE "Country" = 'United States' AND "Score" = '72-68-74-72=286';