يَسْـَٔلُونَكَ عَنِ ٱلسَّاعَةِ أَيَّانَ مُرْسَىٰهَا ۝٤٢ How is أَيَّانَ مُرْسَىٰهَا analyzed in the quoted question?

Surah An-Nazi‘at — Part 5