Why is this question a duplicate?

Question

I would like to understand why this question was classified as a duplicate. Is it not a bit stretched? I can see the similarity, but the structures present in the body of each question are in fact different:

on which grazed a few cattle and sheep (where the predicate graze precedes the subject without the dummy preliminary subject "there")

and

In a hole in the ground there lived a hobbit (where the structure is there + verb + subject).

It is true that the first structure does get attention in the other question later in the answers and comments, but still, I don't see why two questions about different structures were treated as duplicates. What am I missing, can someone help me understand the principle?

Answer 1

Because I believe that fixating on the expletive there mistakes the forest for the trees. Pretending that 1 and 2 are fundamentally different seems unproductive:

1. From the door came a cry for help.
2. From the door there came a cry for help.
3. This is the door from which came a cry for help.

Because of case 3 I’ve reopened it, but the existing answers don’t seem to hit the nail on the head. Too many words, too little meat.