Hi Yes there are two tools we use all the time which yield slightly different results one is precise the other fuzzy They are Earwig s Copyvio Detector fuzzy but far reaching and the Duplicate Detector I m afraid we don t agree on the amount of difference there must be from a source in the simplest possible terms content you add here must be written entirely in your own words It just isn t enough to change a few words or phrases in an existing text Also I m afraid that a re write can not be started by copying over the pre existing and potentially infringing text the page needs to be re written in new language which is not that of the original from scratch content which is definitely original infobox categories references etc can be copied over but nothing that might be contaminated Of course the place names and so on will remain the same but the rest of what you write needs to be to look and to feel quite different from the source material I suggest if you don t mind clearing the body text from that page and making a clean start Do you think there might be other articles where you have stayed as near to your sources as you have in this one If so they too may need some revision and if so your help with that would be much appreciated Regards