user: Question: What is the average money for a to par of 15, and is from the United States?
Columns: ['Place', 'Player', 'Country', 'Score', 'To par', 'Money ( $ )']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['1', 'Ted Ray', 'Jersey', '74-73-73-75=295', 11.0, 500.0]
SQL:

assistant: SELECT AVG("Money ( $ )") FROM "Table" WHERE "To par" = 15.0 AND "Country" = 'United States';