user: Question: What brand is the RW-2100 model?
Columns: ['Brand', 'Model', 'Type', 'Modem', 'Storage', 'CPU speed', 'CPU chip']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Sony', 'INT-W100', 'Classic', 'V.34', '2 MB', '112MHz', 'R4640']
SQL:

assistant: SELECT "Brand" FROM "Table" WHERE "Model" = 'RW-2100';