user: Question: Which event had a total of Defending champion?
Columns: ['Shooter', 'Event', 'Rank points', 'Score points', 'Total']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Du Li ( CHN )', 'WCF 2007', 'Defending champion', 'Defending champion', 'Defending champion']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Total" = 'Defending champion';