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

### Instruction:
How many bronzes were held by those with a total of 4 and less than 3 silvers.

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

### Response:
SELECT SUM Bronze FROM table WHERE Total = 4 AND Silver < 3