user: Question: What method was used that had a resulting Win against opponent, Natsuko Kikukawa?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Round', 'Time']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Loss', '14-14', 'Shayna Baszler', 'Submission (neck crank)', 1.0, '2:05']
SQL:

assistant: SELECT "Method" FROM "Table" WHERE "Res." = 'Win' AND "Opponent" = 'Natsuko Kikukawa';