user: Question: For the team whose shirt sponsor is Krombacher, who is the team captain?
Columns: ['Team', 'Head Coach', 'Team Captain', 'Kitmaker', 'Shirt sponsor']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hertha BSC', 'Lucien Favre', 'Arne Friedrich', 'Nike', 'Deutsche Bahn']
SQL:

assistant: SELECT "Team Captain" FROM "Table" WHERE "Shirt sponsor" = 'Krombacher';