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

### Instruction:
Who has a total of the Bronze less than 4, gold more than 0, and no silver?

### Inputs:
table_name: table, columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']

### Response:
SELECT SUM Bronze FROM table WHERE Total < 4 AND Gold > 0 AND Silver = 0