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 Q]: Production lines slowed , then came to a standstill , because the workers were no longer showing up .
[EX A]: Original

[EX Q]: She swiped her card , pushed through the metal turnstile , and stepped out onto the platform .
[EX A]: Original

[EX Q]: Instead , he comes to Trevi - the fountain of flyers .
[EX A]:
Changed