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

### Instruction:
What is the sum of a rank whose nation is West Germany and has bronze larger than 0?

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

### Response:
SELECT SUM Rank FROM table WHERE Nation = west germany AND Bronze > 0