user: Question: What type of cartridge is used by a Weatherby?
Columns: ['Cartridge', 'Bullet weight', 'Muzzle velocity', 'Muzzle energy', 'Source']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['.375 Dakota', 'gr (g)', 'ft/s (m/s)', 'ft·lbf (J)', 'Dakota Arms']
SQL:

assistant: SELECT "Cartridge" FROM "Table" WHERE "Source" = 'Weatherby';