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

### Instruction:
What is the minimum number of perfect 40s?

### Inputs:
table_name: table, columns: ['Rank by average', 'Place', 'Couple', 'Perfect 40s', 'Total', 'Number of dances', 'Season', 'Average']

### Response:
SELECT MIN Perfect 40s FROM table