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

### Instruction:
What class has nsr250 as the machine, with points greater than 97?

### Inputs:
table_name: table, columns: ['Year', 'Class', 'Team', 'Machine', 'Points', 'Rank', 'Wins']

### Response:
SELECT Class FROM table WHERE Machine = nsr250 AND Points > 97