user: Question: Which series occurred in which the Semi-Finalist was runner-up and the 7800.00 was 6420.00?
Columns: ['22/06/2008', 'Indonesia Super Series 2008', 'S.Series', '7800.00', 'Runner-Up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['06/04/2008', 'India Grand Prix Gold 2008', 'GP Gold', '4900.00', 'Semi-Finalist']
SQL:

assistant: SELECT "Indonesia Super Series 2008" FROM "Table" WHERE "Runner-Up" = 'Semi-Finalist' AND "7800.00" = '6420.00';