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

### Instruction:
What is the highest silver medal count when there is 1 Bronze medal and 1 Gold medal?

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

### Response:
SELECT MAX Silver FROM table WHERE Bronze = 1 AND Gold = 1