It should be "someone else's". "someone's else" is always wrong. Abdulla AbdulAziz Al-h Which of the two sentences Those are not sentences.
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Abdulla AbdulAziz Al-hWhich of the two sentencesThose are not sentences. They are noun phrases.
GPYThey are noun phrases.Or, rather, I should say that the first one is a noun phrase. The second one isn't anything, since it is an ungrammatical combination of words.