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

### Instruction:
What is the silver when the Total is 1, and Gold is 1?

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

### Response:
SELECT AVG Silver FROM table WHERE Total = 1 AND Gold = 1