user: Question: Which Top Speed has a Model Name of D14/4 Supreme D14/4 Sports & Bushman?
Columns: ['Model Name', 'Engine', 'Top Speed', 'No. of Gears', 'Electrics']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['D1', '125cc, bhp (kW)', 'mph (km/h)', 3.0, 'Wico-Pacy or Lucas']
SQL:

assistant: SELECT "Top Speed" FROM "Table" WHERE "Model Name" = 'D14/4 Supreme D14/4 Sports & Bushman';