instruction:
In this task you are given a sentence with one coordinating conjunction (for, and, nor, but, or, yet, and so). You must judge whether the order of two coordinated clausal conjoints have been inverted or not. Inversion would result in the sentence sounding unnatural. Label the instances as "Original" or "Inversion" based on your judgment.
question:
You can 't really drive off that many birds , but I tried to beat them off with my hands .
answer:
Inversion


question:
He sank into her and they groaned in unison .
answer:
Original


question:
The top rooms seemed to have older students than in the lower ones and these rooms all appeared to be occupied with girls .
answer:

Inversion