user: ### NOW ANSWER:
Question: How many seats have a quantity over 45?
Columns: ['System', 'Owner', 'Quantity', 'Delivery', 'Length', 'Gauge', 'Operation', 'Seats', 'Standing']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Chemnitz Stadtbahn', 'Chemnitzer Verkehrs-Aktiengesellschaft', 14.0, '1993–2000', 'm (ft)', 'Standard', 'Uni', 89.0, 123.0]
SQL:

assistant: SELECT SUM("Seats") FROM "Table" WHERE "Quantity" > 45.0;