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

### Instruction:
How many different engines are there for the model with model designation 97G00?

### Inputs:
table_name: table, columns: ['Model Type', 'Model Designation', 'Engine', 'Wheelbase (mm/inch)', 'GVW (kg/ton)', 'Axle Ratio']

### Response:
SELECT COUNT Engine FROM table WHERE Model Designation = 97G00