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

### Instruction:
Name the partner for surface of grass and opponents of jürgen melzer philipp petzschner

### Inputs:
table_name: table, columns: ['Outcome', 'Date', 'Surface', 'Partner', 'Opponents in the final', 'Score in the final']

### Response:
SELECT Partner FROM table WHERE Surface = grass AND Opponents in the final = jürgen melzer philipp petzschner