user: Question: How many seats in 2001 with a quantity greater than 4?
Columns: ['Length (feet)', 'Year', 'Make and model', 'Floor type', 'Number of seats', 'Bicycle capacity†', 'Fuel propulsion', 'Quantity']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text', 'real']
Sample row: ['30', '2001', 'NovaBus RTS', 'High', 27.0, 2.0, 'Diesel', 4.0]
SQL:

assistant: SELECT SUM("Number of seats") FROM "Table" WHERE "Year" = '2001' AND "Quantity" > 4.0;