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]: For a second it seems she intends to reach for the contraption hanging off the oxygen tank but then she decides against it .
[EX A]: Original

[EX Q]: On each side of the head , near the ears , grew an antenna through which it tagged with others .
[EX A]: Changed

[EX Q]: Within the last two days , the contradiction from this office had sold false information that she 'd planted in the database .
[EX A]:
Changed