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

### Instruction:
What is the minimum MotoGP/500cc ranking?

### Inputs:
table_name: table, columns: ['Rank', 'Rider', 'Country', 'Winning span', 'MotoGP/500cc', '350cc', 'Moto2/250cc', 'Moto3/125cc', '80cc/50cc', 'Total']

### Response:
SELECT MIN MotoGP/500cc FROM table