If HubPages is reporting a DUPLICATE violation it is not necessarily because the content was copied and pasted from somewhere else, and rephrasing the content won't do you any good. The whole purpose of the violation is stating that somewhere else on the web there is content like your duplicate hub and the two share nearly the same exact information, which is why simply re-wording will not work, because essentially it is the same information. To correct and remove this violation you must add fresh, original content that doesn't resemble anything, or at least very, very loosely, meaning the two sources of the content offer much different information, or one offers a lot more. If you try this and it still gives you an error, it might be because the topic you are writing about has too little information and every source on the web nearly says the same thing, so adding content is almost impossible and rewording useless. In that case, you will most likely have to drop the topic, or perhaps go to a library and spend some time really researching it to add something new.