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

### Instruction:
What 500 yard Freestyle has a Combined of palo verde, and a 100 yard Butterfly of edward kollar (douglas)?

### Inputs:
table_name: table, columns: ['Combined', '50 yard Freestyle', '100 yard Freestyle', '200 yard Freestyle', '500 yard Freestyle', '100 yard Backstroke', '100 yard Butterfly']

### Response:
SELECT 500 yard Freestyle FROM table WHERE Combined = palo verde AND 100 yard Butterfly = edward kollar (douglas)