user: Question: Who was the opponent that led to a record of 23-5?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '23-5', 'Paul Daley', 'Decision (unanimous)', 'BAMMA 7', 'Birmingham , England']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Record" = '23-5';