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.

Ex Input:
The charging portion of the circuits included solar arrays , hacked into the rooftop of the bridge .

Ex Output:
Changed


Ex Input:
The singsong voice froze Holly in her tracks .

Ex Output:
Changed


Ex Input:
He gasped in surprise but he must have managed to maintain his concentration because the enchantment remained active .

Ex Output:

Original