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

### Instruction:
What is the average grid of driver Christian Vietoris who has less than 12 laps?

### Inputs:
table_name: table, columns: ['Team', 'Driver', 'Laps', 'Time', 'Grid']

### Response:
SELECT AVG Grid FROM table WHERE Driver = christian vietoris AND Laps < 12