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]: " I knew that establishment was being filmed ; only a fool wouldn 't expect those rooms were videoed .
[EX A]: Changed

[EX Q]: He could not answer those questions without resenting the sudden and final end to his career as a law enforcement officer .
[EX A]: Changed

[EX Q]: I have no headway with you .
[EX A]:
Changed