user: Question: Who are the major users from Australia?
Columns: ['Name/ designation', 'Year of intro', 'Country of origin', 'Primary cartridge', 'Major users']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['CSMG', 2000.0, 'Belgium', '9x19mm Parabellum 22mm Grenade', 'n/a']
SQL:

assistant: SELECT "Major users" FROM "Table" WHERE "Country of origin" = 'Australia';