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 thought it was a mirage .
Example Output: Original

Example Input: I didn 't just yearn for his affection , or want to become one with him .
Example Output: Original

Example Input: She frowned at him , " freaks ? "
Example Output:
Changed