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

### Instruction:
What is the sum of All-Time, when Amateur Era is less than 0?

### Inputs:
table_name: table, columns: ['Country', 'Amateur Era', 'Open Era', 'All-time', 'First title', 'Last title']

### Response:
SELECT SUM All-time FROM table WHERE Amateur Era < 0