how to import geonames data to JOSM (SD.txt)

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I want create map like this. based on OpenStreetMap?
Pubblicatu di mustafakamil lu 24 November 2016 n Englishnew arabic font on the map is awesome …
I want make island on Nile but Does not appear as required
Pubblicatu di mustafakamil lu 8 April 2016 n EnglishWhat are the Benefits of GPS Tracking
Pubblicatu di mustafakamil lu 5 September 2015 n Arabic (العربية)…?What are the Benefits of GPS Tracking to openstreetmap
I use Ubuntu 14.04
Imagery menu select Bing
come