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: ' Hold quite still or I 'll gnaw you ! '
Example Output: Original

Example Input: She hurried through a shower , then pulled on a pair of soft , purple slacks with a matching jumper .
Example Output: Changed

Example Input: He held her while she convulsed , and then he thrust forward one last time , his entire body rigid with his release .
Example Output:
Original