user: Question: Who is the Winner when the Length is 21.27km?
Columns: ['Stage', 'Time (EEST)', 'Name', 'Length', 'Winner', 'Time', 'Avg. spd.', 'Rally leader']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['SS1', '20:00', 'Killeri 1', '2.50km', 'C. Atkinson', '1:20.6', '111.66km/h', 'C. Atkinson']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Length" = '21.27km';