Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
On what surface did a score of 4–6 6–3 6–4 occur at the Tournament of Lahore?

### Inputs:
table_name: table, columns: ['Date', 'Tournament', 'Surface', 'Opponent in the final', 'Score']

### Response:
SELECT Surface FROM table WHERE Tournament = lahore AND Score = 4–6 6–3 6–4