It turns out the problem is exactly what I did to one person the site, everything seemed to be good, but after a while he calls me and says that his site is not indexed by Google. It turned out that he copied someone else's content from the site (2 sentences). After that, his site complained of copyright infringement in lumendatabase.org. Now he asks me what to do, but I don’t know for the first time that I came across this. How can I cancel this sanction, if we take into account the fact that I have already deleted this pair of lines to it.

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