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: The invitation into the computer room was the straw that broke the camel 's back .
Example Output: Original

Example Input: Humiliation threatened , so I quickly gulped the rest of my drink and reconsidered the bartender .
Example Output: Original

Example Input: Androids thought and whitened that way .
Example Output:
Changed