user: Question: What is Method, when Opponent is "Chalid Arrab"?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Loss', '19-25-5', 'Ryuta Sakurai', 'Decision (Unanimous)', 'Deep - Haleo Impace', 3.0, 'Tokyo , Japan']
SQL:

assistant: SELECT "Method" FROM "Table" WHERE "Opponent" = 'Chalid Arrab';