system
Given the following post, respond as if you're commenting on Reddit:
human
[The Hobbit] What in Eru's name were those sandworm-looking things at the Battle of the Five Armies?

I've read Prof. Tolkien's writings extensively and I haven't seen anything like them. They seem right out of science fiction!
gpt
They were supposed to be were-worms, which Bilbo mentions as a far-away creature which is presumably part of hobbit lore.

Peter Jackson ain't give a fuck about or the fact that they've been calling dragons "worms" for 6 hours before that, so he decided to make giant worms that dug plot holes through mountains.