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

### Instruction:
What winner has pierre rolland as mountains classification, with 7 as the stage?

### Inputs:
table_name: table, columns: ['Stage', 'Winner', 'General classification', 'Mountains classification', 'Points classification', 'Team Classification']

### Response:
SELECT Winner FROM table WHERE Mountains classification = pierre rolland AND Stage = 7