user: Question: What was the surface of the game that resulted in a final score of 6-1 7-5?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '25-Jan-2004', 'Clearwater, Florida', 'Hard', 'Anda Perianu', '6-4 6-3']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Score" = '6-1 7-5';