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

### Instruction:
What is the date founded/founder when the emblem was Hercules?

### Inputs:
table_name: table, columns: ['Legion no and title', 'Main legion base', 'Emblem', 'Date founded/ founder', 'Date disband', 'Castra legionaria (legion bases) * = main base. Start date 31 BC if unspecified', 'Notes']

### Response:
SELECT Date founded/ founder FROM table WHERE Emblem = Hercules