The question here was moved to ELL:
It is about grammatical analysis not English language learning. Why was it moved? I don't understand.
The question here was moved to ELL:
It is about grammatical analysis not English language learning. Why was it moved? I don't understand.
I thought the question/grammatical point is one that would be covered in an intermediate ESL course. I assumed, judging from the OP's name, Penguin Learning, and the link provided, that this was student of English. I taught ESL for many years, and I wouldn't know how to do that without at least some grammatical analysis (sometimes even based on a comparison with the learner's native language).
Are we saying that questions on ELL can't be about grammar, or that this particular grammatical point is too advanced?
I believe I was the first close/migration vote. I thought that if I was wrong about the appropriateness of migration, there simply wouldn't be any additional migration votes. I didn't do any question searching on either site, but simple felt this was a basic feature of relative clauses. If, as Edwin points out, this point has been covered on ELU many times, then perhaps the close reason should be duplication rather than migration.
'... the ultramodern megalopolis it is today ...'
Here, 'it is today' is clearly a that-deleted form of the relative clause 'that it is today'; 'voting to close as the question is predicated on a misconception' seems harsh, but relative clauses are reasonably basic (and have been covered many times on ELU).