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

### Instruction:
Name the date for grass surface for quarterfinal at the nsw building society open tournament

### Inputs:
table_name: table, columns: ['Tournament', 'Date', 'Surface', 'Round', 'Opponent']

### Response:
SELECT Date FROM table WHERE Surface = grass AND Round = quarterfinal AND Tournament = nsw building society open