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

### Instruction:
Which series occurred in which the semi-finalist was runner-up and the 7800.00 was 6420.00?

### Inputs:
table_name: table, columns: ['22/06/2008', 'Indonesia Super Series 2008', 'S.Series', '7800.00', 'Runner-Up']

### Response:
SELECT Indonesia Super Series 2008 FROM table WHERE Runner-Up = Semi-Finalist AND 7800.00 = 6420.00