user: Question: What was the method of resolution for the fight against Dale Hartt?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Loss', '21–9', 'Cub Swanson', 'TKO (punches)', 3.0, '2:24', 'Las Vegas, Nevada , United States']
SQL:

assistant: SELECT "Method" FROM "Table" WHERE "Opponent" = 'Dale Hartt';