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

### Instruction:
Which runner-up placed in a year prior to 2006 and whose Champion was Elon?

### Inputs:
table_name: table, columns: ['Year', 'Champion', 'Score', 'Runner-Up', 'Location', 'Semi-Finalist #1', 'Semi-Finalist #2']

### Response:
SELECT Runner-Up FROM table WHERE Year < 2006 AND Champion = elon