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

### Instruction:
Which Copa del Rey has a La Liga smaller than 0?

### Inputs:
table_name: table, columns: ['Name', 'La Liga', 'Copa del Rey', 'UEFA Champions League', 'FIFA Club World Championship', 'Total']

### Response:
SELECT SUM Copa del Rey FROM table WHERE La Liga < 0