| ```python | |
| mapping = { | |
| "evga supernova 1300 watt g2": "unknown", | |
| "evga supernova 1300 watt psu": "unknown", | |
| "evga supernova 1300g2 80plus gold power supply": "unknown", | |
| "evga supernova 1300g2 atx12v/eps12v 1300w 80plus gold power supply": "unknown", | |
| "evga supernova 1300g2 atx12v/eps12v 1300w 80plus gold power supply 120-g2-1300-xr": "unknown", | |
| "evga supernova 1300watt": "unknown", | |
| "evga supernova 1500watt": "unknown", | |
| "evga supernova 1600w g2 psu": "unknown", | |
| "evga supernova 1600w power supplies": "unknown", | |
| "evga supernova 650g1 650w atx12v": "unknown", | |
| "evga supernova 650g2": "unknown", | |
| "evga supernova 750w": "unknown", | |
| "evga supernova 750w g2": "unknown", | |
| "evga supernova 850 g2": "unknown", | |
| "evga supernova g1": "unknown", | |
| "evga supernova g2": "unknown", | |
| "evga supernova g2 1300w": "unknown", | |
| "evga supernova nex 650 g power supply": "unknown", | |
| "evga supernovas": "unknown", | |
| "evga supernove 750g2": "unknown", | |
| "evga supplies": "unknown", | |
| "evga titanium 1600 watt psu": "unknown", | |
| "evga titanium 1600w power supply": "unknown", | |
| "evga z77 ftw": "unknown", | |
| "evga-1000 g3 psu": "unknown", | |
| "evga1300": "unknown", | |
| "evga1300 psu": "unknown", | |
| "evga750": "unknown", | |
| "evo batch one": "unknown", | |
| "ew-7811un": "unknown", | |
| "ex-naysayers": "unknown", | |
| "excalibur asic scrypt miners": "unknown", | |
| "excavator": "unknown", | |
| "excel based os": "unknown", | |
| "excess fan": "unknown", | |
| "exchange rate icons": "unknown", | |
| "exede sat connection": "unknown", | |
| "exhaust duct": "unknown", | |
| "exhaust ducting": "unknown", | |
| "exhaust fan": "unknown", | |
| "exhaust fans": "unknown", | |
| "expansion connector": "unknown", | |
| "expansion usb": "unknown", | |
| "experimental board": "unknown", | |
| "experimental boards": "unknown", | |
| "explorer.exe": "unknown", | |
| "exsys 1177": "unknown", | |
| "extended battery module": "unknown", | |
| "extension cable": "unknown", | |
| "extension cables": "unknown", | |
| } | |
| ``` |