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: Abby and I were heading to the library to meet Ivy when we passed Heidi Rosen talking excitedly to her friend outside the auditorium.

SOLUTION: Original

PROBLEM: Once they were all gathered at the door, he tapped the knocker iron.

SOLUTION: Inversion

PROBLEM: I put my back into it and tried to push it to the check line out.

SOLUTION:
Inversion