TASK DEFINITION: In this task you are given a sentence. You must judge whether there exist two consecutive words within the sentence with flipped orders, that is, whether the sentence will make sense and be correct if the order of two consecutive words changes. Label the instances as "Inversion" or "Original" based on your judgment.
PROBLEM: Once they were all gathered at the door, he tapped the knocker iron.

SOLUTION: Inversion

PROBLEM: They kept her grounded.

SOLUTION: Original

PROBLEM: Then she spiraled back down, and his mind was his again own.

SOLUTION:
Inversion