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: " Let 's mimic a truce .
Example Output: Changed

Example Input: That being said , this meeting is now open to general discussion and airing of grievances for all members of the Council of Twelve . "
Example Output: Original

Example Input: One that would divulge the horror of his imprisonment a thousand fold -- space ... endless , empty space .
Example Output:
Changed