In this task, you are given a sentence. You must judge whether a single noun or verb has been replaced with another word with the same part of speech. The inversion would result in the sentence sounding unnatural, So unnatural sentences will be considered changed. Label the instances as "Original" or "Changed" based on your judgment.

Example Input: I let out a gasp while Cohen laughed and steered the dog away , stopping him from owning me .
Example Output: Changed

Example Input: " Look , Ares , " the pediatrician said .
Example Output: Changed

Example Input: " Do you think she might giggle if a tree happened to tickle her swimsuit ? "
Example Output:
Changed