user: Question: What is the event where the opponent was Chris Barden?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Loss', '68–18 (1)', 'Mike Kyle', 'KO (punch)', 'CFA 11: Kyle vs. Wiuff 2', 1.0, '0:21', 'Coral Gables, Florida , United States']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Opponent" = 'Chris Barden';