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.

Input: Consider Input: You radioed in ; you received permission to terminate your watch .

Output: Original


Input: Consider Input: The space felt less protective than it was imprisoning .

Output: Original


Input: Consider Input: They are efficient predators , not cute parakeets .


Output: Original