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.

The realisation gives her host thanks , promising to return and finish her work with the roof .
Changed

But the alternative is a whole can of worms I flinch at the thought of opening .
Original

But let me ask you a question : For how long do these pleasures you speak of last ?

Original