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You're answer is substantially correct, but I remind you all that Google is not perfect and sometimes it pretend a site is in a language, which is not the one used (i.e.: sometimes it consider some Spanish sites as Portuguese or Galician or even Catalan. That hiccup Google have may be due to browser language configuration, IPs of the site or others variants. Sincerely I would not worry that much. Said that, if you were able to share the domain name, that would help all of us in finding a better answer to your question.