user: Question: Who was the winner of FC Grün-Weiß Wolfen?
Columns: ['Year', 'Winner', 'Finalist', 'Result', 'City', 'Stadium']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1991.0, 'Wernigeröder SV Rot-Weiß', 'SV Merseburg 99', '3-2 aet', 'Bernburg', 'Sportplatz Askania']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Finalist" = 'FC Grün-Weiß Wolfen';