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

### Instruction:
What rank is the Silver Bell mine of Pima county?

### Inputs:
table_name: table, columns: ['Rank', 'Mine', 'County', 'Operator', 'Capacity (thousands of metric tons)']

### Response:
SELECT Rank FROM table WHERE County = pima AND Mine = silver bell