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

Answer: Inversion


Question: It might mar the picture, it but would preserve her reputation.

Answer: Inversion


Question: He wasn't positive if it could disinfect it, but he was reasonably sure it could.

Answer:
Original