user: Question: Who is Dean Whitehead's manager?
Columns: ['Club', 'Manager', 'Captain', 'Manufacturer', 'Sponsor']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Arsenal', 'Arsène Wenger', 'Cesc Fàbregas', 'Nike', 'Fly Emirates']
SQL:

assistant: SELECT "Manager" FROM "Table" WHERE "Captain" = 'Dean Whitehead';