The original sentence is not in context here, but the 'enquiry' seems to be simply asking who he is, in other words, what his name is. It would be good to put a link to the original lesson. You can do this by going to the 'ask your tutor' button on the lesson.
@eevee, Regarding, pertaining to, or about the person she is married. Not a phrase often, but does show up more in formal conversations
I really know that it is not a phrase; however, because I didn't find any name to call it with. I have said to me, I will try to call it 'a phase'. And then, I will know the term it is called with.
Thanks for your reply,
I know the context is not here, but this sentence was in someone's explanation when I asked him what difference there is between these two questions: "She married whom?" and "whom did she marry?