user: Question: What's the best score, with the worst dancer(s) Gethin Jones/Kenny Logan?
Columns: ['Dance', 'Best dancer(s)', 'Best score', 'Worst dancer(s)', 'Worst score']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Cha Cha Cha', 'Alesha Dixon', 39.0, 'Gethin Jones/Kenny Logan', 22.0]
SQL:

assistant: SELECT "Best score" FROM "Table" WHERE "Worst dancer(s)" = 'Gethin Jones/Kenny Logan';