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

### Instruction:
What is the average grid that has a Constructor of brm, tony maggs, and a Laps larger than 102?

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

### Response:
SELECT AVG Grid FROM table WHERE Constructor = brm AND Driver = tony maggs AND Laps > 102