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.

[Q]: Jason tried to articulate his guilt by telling himself that Hope would end up happier in the long run , but that didn 't help him now .
[A]: Changed


[Q]: Sure ... why unite it .
[A]: Changed


[Q]: " Have you ever mastered the locks before ? "
[A]:
Changed