user: ### NOW ANSWER:
Question: What is the power output (kw) of model HXD2B?
Columns: ['Model', 'Build year', 'Top speed (In operation) (km/h)', 'Power output (kW)', 'Builder (Family)', 'Total production']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['AC4000', '1996', 120.0, '4000', 'Zhuzhou', '1']
SQL:

assistant: SELECT "Power output (kW)" FROM "Table" WHERE "Model" = 'HXD2B';