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

### Instruction:
how many times is the nation listed as united states with the total more than 1?

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

### Response:
SELECT COUNT Silver FROM table WHERE Nation = united states AND Total > 1