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

### Instruction:
Which league has total smaller than 284, with Sandro Mazzola league?

### Inputs:
table_name: table, columns: ['Rank', 'Name', 'Years', 'League', 'Total']

### Response:
SELECT MIN League FROM table WHERE Total < 284 AND Name = sandro mazzola