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:
The soft hum from Dina 's sled echoes down the corridors , but we try to move as a unit , permitting no space between us .
answer:
Inversion


question:
I want to grin , but I fight the urge .
answer:
Original


question:
Smog kicked up in a cold draft and the rumble of a fast-approaching train rose .
answer:

Inversion