user: Question: Which team is the kit manufacturer Umbro, and the captain Gary Mabbutt?
Columns: ['Team', 'Manager', 'Captain', 'Kit manufacturer', 'Shirt sponsor']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Arsenal', 'Stewart Houston (caretaker)', 'Tony Adams', 'Nike', 'JVC']
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "Kit manufacturer" = 'Umbro' AND "Captain" = 'Gary Mabbutt';