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: I already had the thing open, and I could see that it contained nothing more than thin a scrap of paper.

SOLUTION: Inversion

PROBLEM: William, who had been awestruck, finally understood what was happening, and began pelting the glass with bullets.

SOLUTION: Original

PROBLEM: Firstly, the men themselves carried spear or sword to pierce, slash and cut at the enemy.

SOLUTION:
Original