From the sentence, "Tomorrow morning, Akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace Akiko, the subject of the sentence, and it is in singular form since Akiko is only one person.
Criteria is the standards or rules to abide by when something is being judged. Hope this helped.
Hymn is the repetition of sounds at the end of words.
It means that no human being that lives on earth is worthy enough to put the said ring on his finger, A being from another universe or planet would have to do so.