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

### Instruction:
How many average points did the team Minardi Team USA have when there was a grid 3 and more laps than 68?

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

### Response:
SELECT AVG Points FROM table WHERE Team = minardi team usa AND Grid = 3 AND Laps > 68