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

### Instruction:
what is the lowest grid when the laps is more than 7 and the driver is rubens barrichello?

### Inputs:
table_name: table, columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']

### Response:
SELECT MIN Grid FROM table WHERE Laps > 7 AND Driver = rubens barrichello