user: Question: What year did the United States win with a total of 278?
Columns: ['Player', 'Country', 'Year(s) won', 'Total', 'To par', 'Finish']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Seve Ballesteros', 'Spain', '1979', 276.0, '–12', '1']
SQL:

assistant: SELECT "Year(s) won" FROM "Table" WHERE "Country" = 'United States' AND "Total" = 278.0;