user: Question: On what surface did a score of 4–6 6–3 6–4 occur at the Tournament of Lahore?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['15 August 2004', 'Islamabad', 'Clay', 'Toshiaki Sakai', '7–6(3) 7–6(5)']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Tournament" = 'Lahore' AND "Score" = '4–6 6–3 6–4';