user: Question: How much Displacement (tons) has an Armament of 2 x -inch (mm), 16 x -inch (mm)?
Columns: ['Name', 'Country', 'Displacement (tons)', 'Armament', 'Weight of discharge', 'Speed']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Good Hope', 'Britain', 14100.0, '2 x -inch (mm), 16 x -inch (mm)', '-pound (kg)', 'knots (km/h)']
SQL:

assistant: SELECT "Displacement (tons)" FROM "Table" WHERE "Armament" = '2 x -inch (mm), 16 x -inch (mm)';